GB2018302A – Two stage process for dyeing keratin fibres
– Google Patents
GB2018302A – Two stage process for dyeing keratin fibres
– Google Patents
Two stage process for dyeing keratin fibres
Info
Publication number
GB2018302A
GB2018302A
GB7911951A
GB7911951A
GB2018302A
GB 2018302 A
GB2018302 A
GB 2018302A
GB 7911951 A
GB7911951 A
GB 7911951A
GB 7911951 A
GB7911951 A
GB 7911951A
GB 2018302 A
GB2018302 A
GB 2018302A
Authority
GB
United Kingdom
Prior art keywords
stage process
keratin fibres
dyeing keratin
dyeing
fibres
Prior art date
1978-04-06
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7911951A
Other versions
GB2018302B
(en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1978-04-06
Filing date
1979-04-05
Publication date
1979-10-17
1979-04-05
Application filed by LOreal SA
filed
Critical
LOreal SA
1979-10-17
Publication of GB2018302A
publication
Critical
patent/GB2018302A/en
1982-08-25
Application granted
granted
Critical
1982-08-25
Publication of GB2018302B
publication
Critical
patent/GB2018302B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
A61Q5/00—Preparations for care of the hair
A61Q5/10—Preparations for permanently dyeing the hair
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K8/00—Cosmetics or similar toiletry preparations
A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
A61K8/41—Amines
A61K8/411—Aromatic amines, i.e. where the amino group is directly linked to the aromatic nucleus
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
A61Q5/00—Preparations for care of the hair
A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring
A61Q5/065—Preparations for temporary colouring the hair, e.g. direct dyes
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
A61K2800/42—Colour properties
A61K2800/43—Pigments; Dyes
A61K2800/432—Direct dyes
A61K2800/4324—Direct dyes in preparations for permanently dyeing the hair
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
A61K2800/88—Two- or multipart kits
GB7911951A
1978-04-06
1979-04-05
Two stage process for dyeing keratin fibres
Expired
GB2018302B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7810277A
FR2421607A1
(en)
1978-04-06
1978-04-06
TWO-STAGE KERATINIC FIBER DYING PROCESS BY PH VARIATION
Publications (2)
Publication Number
Publication Date
GB2018302A
true
GB2018302A
(en)
1979-10-17
GB2018302B
GB2018302B
(en)
1982-08-25
Family
ID=9206800
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7911951A
Expired
GB2018302B
(en)
1978-04-06
1979-04-05
Two stage process for dyeing keratin fibres
Country Status (9)
Country
Link
US
(1)
US4425132A
(en)
JP
(1)
JPS556571A
(en)
BE
(1)
BE875342A
(en)
CA
(1)
CA1142856A
(en)
CH
(1)
CH642255A5
(en)
DE
(1)
DE2913755A1
(en)
FR
(1)
FR2421607A1
(en)
GB
(1)
GB2018302B
(en)
IT
(1)
IT1117647B
(en)
Cited By (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2514258A1
(en)
*
1981-10-08
1983-04-15
Oreal
TINCTORIAL COMPOSITION FOR KERATINIC FIBERS BASED ON BENZENIC NITRATES
EP0081790A1
(en)
*
1981-12-14
1983-06-22
Henkel Kommanditgesellschaft auf Aktien
p-Phenylene diamines, their preparation and use
GB2135329A
(en)
*
1983-01-28
1984-08-30
Schwarzkopf Gmbh Hans
Substituted 4-amino-3-nitrophenols processes for their preparation and hair-colouring agents containing them
EP0286896A2
(en)
*
1987-04-06
1988-10-19
Henkel Kommanditgesellschaft auf Aktien
Aminophenyl alkylene diamines and their use in oxidation hair dyeing agents
FR2635976A1
(en)
*
1988-09-08
1990-03-09
Oreal
TINCTORIAL OXIDATION COMPOSITION CONTAINING AT LEAST ONE DOUBLE BASE ASSOCIATED WITH AT LEAST ONE SINGLE BASE AND METHOD OF DYING THE SAME
EP0459901A1
(en)
*
1990-05-31
1991-12-04
L’oreal
Process for dyeing of keratinic fibres using 2,6-dimethyl-1,4-diaminobenzene and/or 2,6-diethyl-1,4-diaminobenzene in acid medium and compositions using this process
WO1993001792A1
(en)
*
1991-07-19
1993-02-04
Wella Aktiengesellschaft
Process for the oxidative colouring of hair
WO1993023006A1
(en)
*
1992-05-18
1993-11-25
Wella Aktiengesellschaft
Oxidation hair dye based on a creamy carrier and process for dyeing hair
US5344464A
(en)
*
1988-09-08
1994-09-06
L’oreal
Oxidation dye composition containing at least one double base in combination with at least one single base and dyeing process making use of it
WO2007118617A1
(en)
*
2006-04-13
2007-10-25
Henkel Ag & Co. Kgaa
Bleaching and/or colouring agents containing piperidones
US7435267B2
(en)
2004-02-27
2008-10-14
L’oreal S.A.
Secondary para-phenylenediamines bearing an alkoxy group, dye composition comprising them, processes therefor and uses thereof
WO2012119821A2
(en)
*
2011-03-10
2012-09-13
Unilever Plc
Composition
WO2012119811A3
(en)
*
2011-03-10
2013-08-29
Unilever Plc
Composition
CN103415279A
(en)
*
2011-03-10
2013-11-27
荷兰联合利华有限公司
Composition
Families Citing this family (57)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2831847A1
(en)
*
1978-07-20
1980-02-07
Wella Ag
AGENTS FOR COLORING HAIR
LU83177A1
(en)
*
1981-02-27
1982-09-10
Oreal
USE OF HYDROXYANTHRAQUINONES FOR COLORING HUMAN KERATINIC FIBERS, METHOD AND COMPOSITION USING THE SAME
NZ224039A
(en)
*
1987-03-25
1991-01-29
Commw Scient Ind Res Org
Process for pretreating keratin fibres prior to dyeing
DE3801606A1
(en)
*
1988-01-21
1989-07-27
Goldwell Gmbh
AGENTS AND METHODS OF OXIDATIVE FAIRING, IN PARTICULAR FOR THE POST-RIGHT ACQUISITION OF LIVING HAIR
US5279620A
(en)
*
1988-09-12
1994-01-18
L’oreal
Tinctorial compositions for keratin fibres containing precursors of oxidation colorants and indole couplers, and dyeing processes using these compositions
LU87611A1
(en)
*
1989-10-20
1991-05-07
Oreal
TINCTORIAL COMPOSITION FOR KERATINIC FIBERS CONTAINING OXIDATION DYE PRECURSORS AND AMINO INDOLIC COUPLERS, DYEING METHODS USING SAID COMPOSITIONS AND COMPOUNDS
US5254135A
(en)
*
1989-10-20
1993-10-19
L’oreal
Methods for dyeing keratinous fibres with aminoindoles, compositions and devices for use
FR2654336B1
(en)
*
1989-11-10
1994-06-03
Oreal
TINCTORIAL COMPOSITION FOR KERATINIC FIBERS, CONTAINING OXIDATION DYE PRECURSORS AND COUPLERS DERIVED FROM 6- OR 7-HYDROXYINDOLE, AND DYEING METHOD USING THE SAME.
US5560750A
(en)
*
1990-05-08
1996-10-01
Preemptive Advertising, Inc.
Compositions and methods for altering the color of hair
FR2667788B1
(en)
*
1990-10-12
1994-12-02
Oreal
USE OF HYDROXYALKYLAMINO-9,10-ANTHRAQUINONES FOR THE DYEING OF HUMAN KERATINIC FIBERS, COSMETIC COMPOSITION CONTAINING THEM IN ASSOCIATION WITH AZOUIC AND NITER DYES.
DE4103292C2
(en)
*
1991-02-04
1994-02-10
Goldwell Ag
Hair Dye
JP2523418B2
(en)
*
1991-08-13
1996-08-07
花王株式会社
Two-agent keratinous fiber treating agent composition
US6569211B2
(en)
1991-11-19
2003-05-27
Henkel Kommanditgesellschaft Auf Aktien
5,6-dihydroxyindolines as additives for hair dyeing preparations
FR2684296B1
(en)
*
1991-12-03
1995-04-21
Oreal
PROCESS FOR DYEING KERATINIC FIBERS WITH AN ACID PH ALCOXYMETAPHENYLENEDIAMINE AND COMPOSITIONS IMPLEMENTED.
US5665336A
(en)
*
1992-06-03
1997-09-09
Bristol-Myers Squibb Company
Acidic post-treatment of hair dyed with dihydroxyindole
US5486629A
(en)
*
1992-09-01
1996-01-23
Clairol, Inc.
Direct dyes having a quaternary center with a long aliphatic chain
US5393305A
(en)
*
1993-08-26
1995-02-28
Bristol-Myers Squibb Company
Two-part aqueous composition for coloring hair, which forms a gel on mixing of the two parts
FR2741798B1
(en)
1995-12-01
1998-01-09
Oreal
LIGHTENING DYE COMPOSITION FOR KERATINIC FIBERS COMPRISING A SPECIFIC DIRECT DYE
DE19619071A1
(en)
*
1996-05-13
1997-11-20
Henkel Kgaa
Agent and method of dyeing and tinting keratinous fibers
US5688291A
(en)
*
1996-06-27
1997-11-18
L’avante Garde, Inc.
Composition for simultaneously lightening and coloring hair
FR2757385B1
(en)
*
1996-12-23
1999-01-29
Oreal
KERATINIC FIBER OXIDATION DYE COMPOSITION AND DYEING METHOD USING THE SAME
FR2757388B1
(en)
*
1996-12-23
1999-11-12
Oreal
KERATINIC FIBER OXIDATION DYE COMPOSITION AND DYEING METHOD USING THE SAME
FR2757387B1
(en)
*
1996-12-23
1999-01-29
Oreal
KERATINIC FIBER OXIDATION DYE COMPOSITION AND DYEING METHOD USING THE SAME
FR2757384B1
(en)
*
1996-12-23
1999-01-15
Oreal
KERATINIC FIBER OXIDATION DYE COMPOSITION AND DYEING METHOD USING THE SAME
DE69822450T3
(en)
*
1997-10-22
2010-05-06
L’oreal
COLORING AGENT FOR KERATINIC FIBER AND METHOD FOR STAINING USING THIS COMPOSITION
US6074438A
(en)
*
1998-03-03
2000-06-13
Bristol-Myers Squibb Co.
Hair dyeing compositions containing 2-chloro- and 2,6-dichloro-4-aminophenol and phenylpyrazolones
US6187058B1
(en)
*
1998-05-20
2001-02-13
Combe, Inc.,
Low water no volatile organic compound hair lightener and dyeing composition
DE19825134C1
(en)
*
1998-06-05
2000-02-17
Goldwell Gmbh
Process for the oxidative dyeing of human hair
HU0102869A2
(en)
*
1998-06-23
2002-02-28
Henkel Kommanditgesellschaft Auf Aktien
Colorant for colouring keratin fibres
DE19926377A1
(en)
*
1999-06-10
2000-12-14
Henkel Kgaa
Agent for dyeing keratin fibers
DE19941450A1
(en)
*
1999-08-31
2001-03-01
Schwarzkopf Gmbh Hans
hair coloring
DE19949033A1
(en)
*
1999-10-12
2001-04-19
Henkel Kgaa
Hair coloring process
JP2002012526A
(en)
*
2000-06-27
2002-01-15
Kao Corp
Hair dye composition
DE10144882A1
(en)
*
2001-09-12
2003-03-27
Wella Ag
Lightener and colorant used for coloring keratin fibers, especially hair, contains oxidant and yellow, red and/or blue direct dye, which may be applied without oxidant to damaged hair
DE10148671A1
(en)
*
2001-10-02
2003-04-10
Henkel Kgaa
Color stabilization of dyed keratin fibers involves pre- or post-treatment with composition containing aromatic, heteroaromatic or cycloaliphatic carbonyl compound
DE10229420A1
(en)
*
2002-06-29
2004-01-29
Henkel Kgaa
Process for the gentle oxidative coloring of hair
US7074244B2
(en)
*
2003-07-03
2006-07-11
Unilever Home & Personal Care Usa, Division Of Conopco, Inc.
Hair dyeing method including an aligning step
US7060111B2
(en)
*
2003-07-03
2006-06-13
Unilever Home & Personal Care Usa, Division Of Conopco, Inc.
Method for providing more vibrant, natural and long-lasting color to hair
US7347879B2
(en)
*
2004-02-27
2008-03-25
L’Oreál, S.A.
Sulfur-containing secondary para-phenylenediamines dye compositions comprising such para-phenylenediamines, processes, and uses thereof
FR2866882B1
(en)
*
2004-02-27
2017-04-14
Oreal
SULFURATED PARA-PHENYLENEDIAMINES, TINCTORIAL COMPOSITION COMPRISING SUCH PARA-PHENYLENEDIAMINES, PROCESS USING THE SAME AND USE THEREOF
US20070251026A1
(en)
*
2006-04-12
2007-11-01
Boris Lalleman
Unsaturated fatty substances for protecting the color of artificially dyed keratin fibers with respect to washing; and dyeing processes
US9095518B2
(en)
2013-08-01
2015-08-04
Liqwd, Inc.
Methods for fixing hair and skin
GB2525793B
(en)
2014-05-16
2016-11-02
Liqwd Inc
Keratin treatment formulations and methods
DE102014216942A1
(en)
*
2014-08-26
2016-03-03
Henkel Ag & Co. Kgaa
Multitonal one-step dyeings with thickened pretreatment solution I
DE102014216941A1
(en)
*
2014-08-26
2016-03-03
Henkel Ag & Co. Kgaa
Multitonal one-step dyeings with foam-like pretreatment solution
EP3285733B1
(en)
2015-04-24
2019-10-23
Liqwd, Inc.
Methods for treating relaxed hair
MX2017013983A
(en)
2015-05-01
2018-03-15
Oreal
Use of active agents during chemical treatments.
EP3380199A4
(en)
2015-11-24
2019-05-22
L’oreal
Compositions for treating the hair
JP6930994B2
(en)
2015-11-24
2021-09-01
ロレアル
Composition for treating hair
BR112018010344B1
(en)
2015-11-24
2021-08-10
L’oreal
HAIR COMPOSITION, HAIR TREATMENT SYSTEM AND METHOD, METHODS FOR CHANGING HAIR COLOR AND HAIR SHAPE, AND, MULTICOMPARTMENT KITS
US9713583B1
(en)
2016-07-12
2017-07-25
Liqwd, Inc.
Methods and formulations for curling hair
US9872821B1
(en)
2016-07-12
2018-01-23
Liqwd, Inc.
Methods and formulations for curling hair
US11135150B2
(en)
2016-11-21
2021-10-05
L’oreal
Compositions and methods for improving the quality of chemically treated hair
US11433011B2
(en)
2017-05-24
2022-09-06
L’oreal
Methods for treating chemically relaxed hair
CN113616552A
(en)
2017-12-29
2021-11-09
欧莱雅
Composition for changing hair color
US11090249B2
(en)
2018-10-31
2021-08-17
L’oreal
Hair treatment compositions, methods, and kits for treating hair
US11419809B2
(en)
2019-06-27
2022-08-23
L’oreal
Hair treatment compositions and methods for treating hair
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Publication date
Assignee
Title
US2085809A
(en)
1935-10-12
1937-07-06
Gen Aniline Works Inc
Process for dyeing pelts, hairs, and feathers
FR1124391A
(en)
*
1955-05-17
1956-10-09
Gillette Industries Ltd
New enhancements to hair dyeing
FR1124392A
(en)
*
1955-05-17
1956-10-09
Gillette Industries Ltd
Hair dye enhancements
NL101023C
(en)
*
1956-12-19
FR1164951A
(en)
*
1957-01-21
1958-10-16
Oreal
Process for dyeing the hair and other keratin substances, and new products thus obtained
NL107681C
(en)
*
1957-02-02
CH612562B
(en)
1976-01-06
Ciba Geigy Ag
METHOD OF COLORING TEXTILE MATERIAL.
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1966-09-29
1967-05-03
Hugo Jun Hofmann
WALL CABINET, IN PARTICULAR TO STORAGE WEAPONS AND AMMUNITION.
DE1617888A1
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1967-03-14
1971-06-03
Therachemie Chem Therapeut
Process for coloring human hair
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1968-06-24
1971-03-15
LU56631A1
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*
1968-08-02
1970-02-02
DE1959670A1
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1968-12-04
1970-06-18
Rosen William E
Hair bleaching and colouring process
GB1290668A
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1968-12-16
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1969-07-09
1971-01-06
Oreal
GB1326356A
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1970-12-30
1973-08-08
Iws Nominee Co Ltd
Textile colouring process
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1978-11-09
Henkel Kgaa
Oxidn. dye-based hair-dyeing compsn. – contg. di:amino-benzoxazole, di:amino-benzofuran or di:amino-benzoxazolinone derivs. as couplers
1978
1978-04-06
FR
FR7810277A
patent/FR2421607A1/en
active
Granted
1979
1979-04-05
JP
JP4152279A
patent/JPS556571A/en
active
Pending
1979-04-05
BE
BE0/194420A
patent/BE875342A/en
not_active
IP Right Cessation
1979-04-05
CA
CA000325000A
patent/CA1142856A/en
not_active
Expired
1979-04-05
CH
CH321679A
patent/CH642255A5/en
not_active
IP Right Cessation
1979-04-05
US
US06/027,381
patent/US4425132A/en
not_active
Expired – Lifetime
1979-04-05
GB
GB7911951A
patent/GB2018302B/en
not_active
Expired
1979-04-05
IT
IT67723/79A
patent/IT1117647B/en
active
1979-04-05
DE
DE19792913755
patent/DE2913755A1/en
active
Granted
Cited By (20)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2514258A1
(en)
*
1981-10-08
1983-04-15
Oreal
TINCTORIAL COMPOSITION FOR KERATINIC FIBERS BASED ON BENZENIC NITRATES
EP0081790A1
(en)
*
1981-12-14
1983-06-22
Henkel Kommanditgesellschaft auf Aktien
p-Phenylene diamines, their preparation and use
GB2135329A
(en)
*
1983-01-28
1984-08-30
Schwarzkopf Gmbh Hans
Substituted 4-amino-3-nitrophenols processes for their preparation and hair-colouring agents containing them
EP0286896A2
(en)
*
1987-04-06
1988-10-19
Henkel Kommanditgesellschaft auf Aktien
Aminophenyl alkylene diamines and their use in oxidation hair dyeing agents
EP0286896A3
(en)
*
1987-04-06
1989-10-18
Henkel Kommanditgesellschaft Auf Aktien
Aminophenyl alkylene diamines and their use in oxidation hair dyeing agents
US5344464A
(en)
*
1988-09-08
1994-09-06
L’oreal
Oxidation dye composition containing at least one double base in combination with at least one single base and dyeing process making use of it
FR2635976A1
(en)
*
1988-09-08
1990-03-09
Oreal
TINCTORIAL OXIDATION COMPOSITION CONTAINING AT LEAST ONE DOUBLE BASE ASSOCIATED WITH AT LEAST ONE SINGLE BASE AND METHOD OF DYING THE SAME
EP0360644A1
(en)
*
1988-09-08
1990-03-28
L’oreal
Oxidation dyeing composition containing at least one double and at least one single dyeing base, and dyeing process making use of such a composition
US5137538A
(en)
*
1988-09-08
1992-08-11
L’oreal
Oxidation dye composition containing at least one double base in combination with at least one single base and dyeing process making use of it
EP0459901A1
(en)
*
1990-05-31
1991-12-04
L’oreal
Process for dyeing of keratinic fibres using 2,6-dimethyl-1,4-diaminobenzene and/or 2,6-diethyl-1,4-diaminobenzene in acid medium and compositions using this process
FR2662715A1
(en)
*
1990-05-31
1991-12-06
Oreal
PROCESS FOR DYEING KERATINIC FIBERS WITH 2,6-DIMETHYL 1,4-DIAMINO BENZENE AND / OR 2,3-DIMETHYL 1,4-DIAMINO BENZENE AND AN ACID OXIDIZING AGENT AND COMPOSITIONS USED THEREOF.
WO1993001792A1
(en)
*
1991-07-19
1993-02-04
Wella Aktiengesellschaft
Process for the oxidative colouring of hair
WO1993023006A1
(en)
*
1992-05-18
1993-11-25
Wella Aktiengesellschaft
Oxidation hair dye based on a creamy carrier and process for dyeing hair
US5480459A
(en)
*
1992-05-18
1996-01-02
Wella Aktiengesellschaft
Oxidative hair dye based on a creamlike carrier composition as well as process for the dyeing of hair
US7435267B2
(en)
2004-02-27
2008-10-14
L’oreal S.A.
Secondary para-phenylenediamines bearing an alkoxy group, dye composition comprising them, processes therefor and uses thereof
WO2007118617A1
(en)
*
2006-04-13
2007-10-25
Henkel Ag & Co. Kgaa
Bleaching and/or colouring agents containing piperidones
WO2012119821A2
(en)
*
2011-03-10
2012-09-13
Unilever Plc
Composition
WO2012119821A3
(en)
*
2011-03-10
2013-04-04
Unilever Plc
Composition
WO2012119811A3
(en)
*
2011-03-10
2013-08-29
Unilever Plc
Composition
CN103415279A
(en)
*
2011-03-10
2013-11-27
荷兰联合利华有限公司
Composition
Also Published As
Publication number
Publication date
CA1142856A
(en)
1983-03-15
FR2421607A1
(en)
1979-11-02
CH642255A5
(en)
1984-04-13
DE2913755A1
(en)
1979-10-11
US4425132A
(en)
1984-01-10
FR2421607B1
(en)
1983-09-09
DE2913755C2
(en)
1991-08-01
IT7967723D0
(en)
1979-04-05
GB2018302B
(en)
1982-08-25
BE875342A
(en)
1979-10-05
JPS556571A
(en)
1980-01-18
IT1117647B
(en)
1986-02-17
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Date
Code
Title
Description
1997-11-26
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19970405
