Inventor

Peter Bergthaller

Inventor

Cologne, DE

Overview

1977–2002

Patent span

Physics

Primary field (CPC G)

Patents· 54 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Cprimary

G03CPhotosensitive materials for photographic purposes51%

C07DHeterocyclic compounds13%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments12%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

C07CAcyclic or carbocyclic compounds4%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds3%

Y10TTechnical subjects covered by former us classification3%

C09DCoating compositions, e.g. paints, varnishes or lacquers2%

B41MPrinting, duplicating, marking, or copying processes1%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds1%

PatentTitleYear

6,498,002'Photographic silver halide material'2002 6,498,001'Photographic silver halide emulsion'2002 6,498,003'Photographic silver halide material'2002 6,261,758'Production of silver halide emulsions'2001 6,171,773'Color photographic print material'2001 6,150,079'Color photographic recording material'2000 6,043,017'Color photographic silver halide material'2000 6,028,199'Hardeners for photographic materials'2000 5,935,688'Inkjet recording material'1999 5,908,741'Photographic silver halide material'1999 5,888,717'Photographic silver halide emulsion'1999 5,885,760'Color photographic recording material'1999 5,855,657'Inkjet ink'1999 5,821,044'Photographic silver halide emulsions'1998 5,683,863'Photographic silver halide material'1997 5,463,072'Process for the preparation of naphtholic 2-equivalent cyan couplers'1995 5,455,149'Color photographic material containing novel yellow couplers'1995 5,200,306'Color photographic recording material containing a coupler which releases a photographically active compound'1993 5,021,331'Color photographic recording material containing a DIR coupler'1991 5,021,332'Color photographic recording material containing a DIR coupler'1991 5,021,330'Color photographic recording material containing a coupler releasing a photographically active compound'1991 4,939,075'Bleaching baths containing bleaching accelerators'1990 4,870,000'Color photograhic recording material containing a coupler which releases a photographically active compound'1989 4,767,698'Photographic material containing a pyridine azo or pyridazine azo cyan dye releasing compound'1988 4,600,681'Color photographic material with azo dicyanoimidazole dyes'1986 4,579,817'Color photographic recording material containing dye-releasers releasing 6-arylazo-2-amino-3-pyridinol dyes which are chelatable with metal ions'1986 4,579,805'Color photographic recording material containing a thiophene azo dye releaser for cyan dyes'1986 4,559,296'Photographic recording material containing new azo dyes'1985 4,546,073'Photographic recording material containing a precursor of a photographically-active compound'1985 4,524,123'Chelatable 4-thienyl imidazole azo dyes, their use in color photographic recording material'1985 4,524,124'Color photographic recording material containing a thiazole azo dye releaser for cyan dyes'1985 4,521,506'Monoazo pyridinol dyes chelated or capable of being chelated with metal ions and their use for image production'1985 4,474,854'Photographic material containing a layer capable of being dyed by organic dyes'1984 4,461,827'Color photographic recording material containing a non-diffusible dye releaser from which a complexible azo dye is released during development'1984 4,446,219'Photographic material comprising a layer with Ni complex of 2,2\'-bisphenol'1984 4,418,143'Color photographic recording material'1983 4,396,710'Photographic recording material with metal complexable, heterocyclic azo dye'1983 4,393,132'Photographic recording material with arylazocyanoacetic ester dye releasers'1983 4,386,155'Process for the production of photographic images'1983 4,383,021'Image-receiving element for the dye diffusion transfer process with metal complex of diazabicyclooctane'1983 4,355,185'Process for the preparation of 2-mercaptoalkyl-sulphides and 2-mercaptoalkylethers'1982 4,349,624'Photographic silver halide material'1982 4,338,394'Process for hardening photographic gelatin'1982 4,334,013'Use of copolymers in the production of photographic emulsions and photographic materials'1982 4,329,441'Process for the polymerization of allyl ammonium salts and the resulting products'1982 4,323,646'Process for hardening a photographic material'1982 4,297,439'Production of photographic silver halide emulsion'1981 4,294,920'Photographic silver halide emulsion'1981 4,284,718'Photographic silver halide materials containing sulfur containing polymers'1981 4,233,398'Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide'1980 4,186,014'Light sensitive photographic material containing a mordant layer'1980 4,067,741'Hardening photographic layers containing silver halide with a 1-sulphonyl-4-amino-pyridinium salt'1978 4,055,427'Process of hardening a silver halide photographic material with a 1-carbamoyloxypyridinium salt'1977 4,013,468'Method of hardening a protein-containing layer of a silver halide photographic material with an alkyl ester of 1,2-dihydroquinoline-N-carboxylic acid'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to AGFA GEVAERT AG (45)· patent assignee history

1977–1986Based in Cologne, DE· patent location history

1986–2002Based in Bergisch Gladbach, DE· patent location history

1995Patents assigned to AGFA GEVART AG D 51368 (1)· patent assignee history

2000Patents assigned to AGFA GEVAERT NV (3)· patent assignee history

2001–2002Patents assigned to AGFA GEVAERT (4)· patent assignee history

2001Patents assigned to AGFA N V (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AGFA GEVAERT AG	45	1977–1999
AGFA GEVAERT	4	2001–2002
AGFA GEVAERT NV	3	2000
AGFA GEVART AG D 51368	1	1995
AGFA N V	1	2001

Locations

Location	Patents	Span
Cologne, DE	28	1977–1986
Bergisch Gladbach, DE	26	1986–2002