GB1555577A – Photographic processfor the production of pictures of increased contrast
– Google Patents
GB1555577A – Photographic processfor the production of pictures of increased contrast
– Google Patents
Photographic processfor the production of pictures of increased contrast
Info
Publication number
GB1555577A
GB1555577A
GB6208/77A
GB620877A
GB1555577A
GB 1555577 A
GB1555577 A
GB 1555577A
GB 6208/77 A
GB6208/77 A
GB 6208/77A
GB 620877 A
GB620877 A
GB 620877A
GB 1555577 A
GB1555577 A
GB 1555577A
Authority
GB
United Kingdom
Prior art keywords
processfor
photographic
pictures
production
increased contrast
Prior art date
1976-02-20
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
GB6208/77A
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.)
Individual
Original Assignee
Individual
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.)
1976-02-20
Filing date
1977-02-15
Publication date
1979-11-14
1977-02-15
Application filed by Individual
filed
Critical
Individual
1979-11-14
Publication of GB1555577A
publication
Critical
patent/GB1555577A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
G03C5/02—Sensitometric processes, e.g. determining sensitivity, colour sensitivity, gradation, graininess, density; Making sensitometric wedges
GB6208/77A
1976-02-20
1977-02-15
Photographic processfor the production of pictures of increased contrast
Expired
GB1555577A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2607482A
DE2607482C3
(en)
1976-02-20
1976-02-20
Process for the production of images with altered contrast by photographic means
Publications (1)
Publication Number
Publication Date
GB1555577A
true
GB1555577A
(en)
1979-11-14
Family
ID=5970730
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB6208/77A
Expired
GB1555577A
(en)
1976-02-20
1977-02-15
Photographic processfor the production of pictures of increased contrast
Country Status (12)
Country
Link
US
(1)
US4121937A
(en)
JP
(1)
JPS52125328A
(en)
AT
(1)
AT349888B
(en)
BE
(1)
BE851669A
(en)
CA
(1)
CA1099560A
(en)
CH
(1)
CH623940A5
(en)
CS
(1)
CS216698B2
(en)
DE
(1)
DE2607482C3
(en)
FR
(1)
FR2341880B1
(en)
GB
(1)
GB1555577A
(en)
PL
(1)
PL112678B1
(en)
SU
(1)
SU1143318A3
(en)
Family Cites Families (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB190929431A
(en)
*
1909-12-16
1910-12-15
William Gerrard Rennie
Improved Apparatus for Making Autotypes.
US1808743A
(en)
*
1926-07-06
1931-06-09
Paramount Publix Corp
Method of modifying photographs by printing
US1967057A
(en)
*
1932-10-25
1934-07-17
Irvine Andrew
Art of printing sensitized surfaces
US2144066A
(en)
*
1937-01-13
1939-01-17
Kindermann Hermann
Apparatus for the photographic production of outlines for engraved rollers used in textile printing
US2378213A
(en)
*
1944-01-07
1945-06-12
Eastman Kodak Co
Photographic tone correction mask
US2776595A
(en)
*
1952-03-03
1957-01-08
Schumacher Ernst
Line-variator
DE919686C
(en)
*
1952-03-15
1954-11-02
Hans Peter Klauser
Process for modifying the blackening curve in photographic material and means for practicing the process
DE1129724B
(en)
*
1956-07-20
1962-05-17
Hans Drenkelfort Dipl Chem Dr
Process for better visual recognition of fine contrasts
FR1216628A
(en)
*
1958-12-26
1960-04-26
Process for continuously adjusting the contrast of radiographic and photographic prints
US3231737A
(en)
*
1963-04-18
1966-01-25
Georg S Mittelstaedt
Radiographic and photographic color images produced from the superposition of positive and negative images
DE2007240A1
(en)
*
1970-02-17
1971-09-02
Malaise, Jack, Zurich (Schweiz)
Extreme photographic tone separation with co
1976
1976-02-20
DE
DE2607482A
patent/DE2607482C3/en
not_active
Expired
1977
1977-02-11
AT
AT91377A
patent/AT349888B/en
not_active
IP Right Cessation
1977-02-15
GB
GB6208/77A
patent/GB1555577A/en
not_active
Expired
1977-02-15
CH
CH186677A
patent/CH623940A5/de
not_active
IP Right Cessation
1977-02-18
FR
FR7704779A
patent/FR2341880B1/en
not_active
Expired
1977-02-18
US
US05/770,118
patent/US4121937A/en
not_active
Expired – Lifetime
1977-02-18
CS
CS771089A
patent/CS216698B2/en
unknown
1977-02-18
SU
SU772456788A
patent/SU1143318A3/en
active
1977-02-18
CA
CA272,124A
patent/CA1099560A/en
not_active
Expired
1977-02-19
PL
PL1977196124A
patent/PL112678B1/en
unknown
1977-02-21
BE
BE175124A
patent/BE851669A/en
not_active
IP Right Cessation
1977-02-21
JP
JP1724577A
patent/JPS52125328A/en
active
Granted
Also Published As
Publication number
Publication date
CH623940A5
(en)
1981-06-30
JPS52125328A
(en)
1977-10-21
ATA91377A
(en)
1978-09-15
JPH0135333B2
(en)
1989-07-25
FR2341880A1
(en)
1977-09-16
FR2341880B1
(en)
1987-02-27
CA1099560A
(en)
1981-04-21
AT349888B
(en)
1979-04-25
BE851669A
(en)
1977-06-16
PL112678B1
(en)
1980-10-31
DE2607482B2
(en)
1979-08-23
DE2607482A1
(en)
1977-08-25
US4121937A
(en)
1978-10-24
SU1143318A3
(en)
1985-02-28
CS216698B2
(en)
1982-11-26
DE2607482C3
(en)
1980-05-08
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Legal Events
Date
Code
Title
Description
1980-01-30
PS
Patent sealed [section 19, patents act 1949]
1993-10-13
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19930215
