GB1232612A – – Google Patents
GB1232612A – – Google Patents
Info
Publication number
GB1232612A
GB1232612A
GB1232612DA
GB1232612A
GB 1232612 A
GB1232612 A
GB 1232612A
GB 1232612D A
GB1232612D A
GB 1232612DA
GB 1232612 A
GB1232612 A
GB 1232612A
Authority
GB
United Kingdom
Prior art keywords
phosphor
oct
precipitate
amount
light
Prior art date
1967-10-20
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.)
Expired
Application number
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.)
1967-10-20
Filing date
1968-10-01
Publication date
1971-05-19
1968-10-01
Application filed
filed
Critical
1971-05-19
Publication of GB1232612A
publication
Critical
patent/GB1232612A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
C09K11/7777—Phosphates
C09K11/7778—Phosphates with alkaline earth metals
Abstract
1,232,612. Luminescent materials. AMERICAN CYANAMID CO. 1 Oct., 1968 [20 Oct., 1967], No. 46550/68. Heading C4S. An alkaline earth metal phosphate phosphor is activated by trivalent Ce and one of Tb, Dy, Tm, Sm and Nd in an amount less than the Ce by weight and optionally contains an amount of an alkali metal stoichiometrically equivalent to the sum of Ce and Tb, Dy, Tm, Sm or Nd. The phosphor is prepared by mixing boiling aqueous solutions of Ca, Ce and Tb nitrates and (NH 4 ) 2 HPO 4 ; the resulting mixed phosphate precipitate is then heated in a H 2 , A, steam atmosphere to 1250 C. Alternatively the precipitate may be slurried with NaPO 3 before heating. Examples using Sr and Ba phosphates and LiPO 3 are referred to. When irradiated with U.V. light of 3130 the phosphor emits green light.
GB1232612D
1967-10-20
1968-10-01
Expired
GB1232612A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US67673667A
1967-10-20
1967-10-20
Publications (1)
Publication Number
Publication Date
GB1232612A
true
GB1232612A
(en)
1971-05-19
Family
ID=24715759
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1232612D
Expired
GB1232612A
(en)
1967-10-20
1968-10-01
Country Status (7)
Country
Link
US
(1)
US3525698A
(en)
BE
(1)
BE722543A
(en)
BR
(1)
BR6803223D0
(en)
DE
(1)
DE1804308B2
(en)
FR
(1)
FR1585369A
(en)
GB
(1)
GB1232612A
(en)
NL
(1)
NL6814449A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2124243A
(en)
*
1982-07-26
1984-02-15
Mitsubishi Electric Corp
A green-emitting phosphor and a low pressure mercury vapor lamp employing this phosphor
Families Citing this family (13)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3897360A
(en)
*
1972-10-10
1975-07-29
Gte Sylvania Inc
Manganese and cerium activated barium calcium orthophosphate phosphor
US4128411A
(en)
*
1976-01-20
1978-12-05
The United States Of America As Represented By The Secretary Of The Army
Glass compositions having fluorescence properties
JPS5360888A
(en)
*
1976-11-12
1978-05-31
Hitachi Ltd
Fluorescent substance
US4134851A
(en)
*
1977-09-16
1979-01-16
Gte Laboratories Incorporated
Aluminophosphate luminescent glass
NL186458B
(en)
*
1977-10-03
1990-07-02
Philips Nv
PROCESS FOR PREPARING A LUMINESCENT NATURAL POTASSIUM METAL PHOSPHATE; LUMINESCENT SCREEN; LOW-PRESSURE MERCURY DISCHARGE LAMP.
US4452843A
(en)
*
1980-05-30
1984-06-05
Gao Gesellschaft Fur Automation Und Organisation Mbh.
Security paper
ES8203280A1
(en)
*
1980-05-30
1982-04-01
Gao Ges Automation Org
Paper security with authenticity mark of luminescent material and method for the authentication thereof.
DE3020652A1
(en)
*
1980-05-30
1981-12-10
GAO Gesellschaft für Automation und Organisation mbH, 8000 München
SECURITY PAPER WITH CHARACTERISTICS IN THE FORM OF LUMINESCENT SUBSTANCES AND METHOD FOR MODIFYING THE SAME
WO1981003510A1
(en)
*
1980-05-30
1981-12-10
Gao Ges Automation Org
Paper security with authenticity mark of luminescent material only in an invisible area of the light spectrum and checking method thereof
US4647399A
(en)
*
1983-02-18
1987-03-03
Gte Laboratories Incorporated
Process for producing Ce-Mn coactivated fluoroapatite phosphors as the yellow emitting component for high efficacy lamp blends
US5091110A
(en)
*
1990-05-14
1992-02-25
Gte Products Corporation
Method of making lanthanum cerium terbium phosphate phosphor
CN112919899A
(en)
*
2021-03-10
2021-06-08
旦宇科技江苏有限公司
Preparation method and application of terbium ion activated phosphate luminescent ceramic
CN114807601B
(en)
*
2022-05-24
2023-10-20
中国科学院赣江创新研究院
Method for adsorbing rare earth element lanthanum by utilizing phosphoric acid modified kaolin
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2306567A
(en)
*
1941-09-02
1942-12-29
Gen Electric
Fluorescent material and its manufacture
US2455413A
(en)
*
1946-07-15
1948-12-07
Gen Electric
Calcium phosphate phosphor
US3079347A
(en)
*
1960-10-25
1963-02-26
Bell Telephone Labor Inc
Terbium and cerium activated calcium fluoride optical maser material
1967
1967-10-20
US
US676736A
patent/US3525698A/en
not_active
Expired – Lifetime
1968
1968-10-01
GB
GB1232612D
patent/GB1232612A/en
not_active
Expired
1968-10-09
NL
NL6814449A
patent/NL6814449A/xx
unknown
1968-10-11
FR
FR1585369D
patent/FR1585369A/fr
not_active
Expired
1968-10-17
BR
BR203223/68A
patent/BR6803223D0/en
unknown
1968-10-18
BE
BE722543D
patent/BE722543A/xx
unknown
1968-10-21
DE
DE19681804308
patent/DE1804308B2/en
active
Pending
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2124243A
(en)
*
1982-07-26
1984-02-15
Mitsubishi Electric Corp
A green-emitting phosphor and a low pressure mercury vapor lamp employing this phosphor
Also Published As
Publication number
Publication date
BR6803223D0
(en)
1973-02-27
NL6814449A
(en)
1969-04-22
BE722543A
(en)
1969-04-18
US3525698A
(en)
1970-08-25
FR1585369A
(en)
1970-01-16
DE1804308B2
(en)
1971-12-23
DE1804308A1
(en)
1969-05-22
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(en)
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Luminescent Materials
Legal Events
Date
Code
Title
Description
1971-10-13
PS
Patent sealed [section 19, patents act 1949]
1976-04-28
PLNP
Patent lapsed through nonpayment of renewal fees
