Inventor · disambiguated record
Peter Bergthaller
Also filed as: BERGTHALLER PETER · HELLING GUNTER
54 granted patents·422 citations·filing 1974–2001
98Inventor score
Top patents by PatentIndex Score
54 records- 0195US4396710APhotographic recording material with metal complexable, heterocyclic azo dyeAGFA GEVAERT AG·Filed 1982·Granted Aug 2, 1983·41 cites·3 claims
- 0285US5455149AColor photographic material containing novel yellow couplersAGFA GEVAERT AG·Filed 1994·Granted Oct 3, 1995·28 cites·4 claims
- 0385US4297439AProduction of photographic silver halide emulsionAGFA GEVAERT AG·Filed 1979·Granted Oct 27, 1981·14 cites·8 claims
- 0483US4524124AColor photographic recording material containing a thiazole azo dye releaser for cyan dyesAGFA GEVAERT AG·Filed 1984·Granted Jun 18, 1985·15 cites·2 claims
- 0581US5021331AColor photographic recording material containing a DIR couplerAGFA GEVAERT AG·Filed 1990·Granted Jun 4, 1991·12 cites·1 claims
- 0681US4521506AMonoazo pyridinol dyes chelated or capable of being chelated with metal ions and their use for image productionAGFA GEVAERT AG·Filed 1984·Granted Jun 4, 1985·18 cites·3 claims
- 0780US6043017AColor photographic silver halide materialAGFA GEVAERT NV·Filed 1999·Granted Mar 28, 2000·9 cites·13 claims
- 0879US4546073APhotographic recording material containing a precursor of a photographically-active compoundAGFA GEVAERT AG·Filed 1984·Granted Oct 8, 1985·15 cites·4 claims
- 0978US5683863APhotographic silver halide materialAGFA GEVAERT AG·Filed 1995·Granted Nov 4, 1997·9 cites·13 claims
- 1078US4600681AColor photographic material with azo dicyanoimidazole dyesAGFA GEVAERT AG·Filed 1985·Granted Jul 15, 1986·15 cites·2 claims
- 1176US4355185AProcess for the preparation of 2-mercaptoalkyl-sulphides and 2-mercaptoalkylethersAGFA GEVAERT AG·Filed 1980·Granted Oct 19, 1982·13 cites·6 claims
- 1276US4329441AProcess for the polymerization of allyl ammonium salts and the resulting productsAGFA GEVAERT AG·Filed 1980·Granted May 11, 1982·22 cites·10 claims
- 1375US4067741AHardening photographic layers containing silver halide with a 1-sulphonyl-4-amino-pyridinium saltAGFA GEVAERT AG·Filed 1976·Granted Jan 10, 1978·8 cites·10 claims
- 1474US4334013AUse of copolymers in the production of photographic emulsions and photographic materialsAGFA GEVAERT AG·Filed 1980·Granted Jun 8, 1982·14 cites·7 claims
- 1570US4939075ABleaching baths containing bleaching acceleratorsAGFA GEVAERT AG·Filed 1988·Granted Jul 3, 1990·10 cites·9 claims
- 1667US4233398AProcess for the hardening of photographic layers utilizing fast acting hardener and polysaccharideAGFA GEVAERT AG·Filed 1978·Granted Nov 11, 1980·9 cites·2 claims
- 1766US4055427AProcess of hardening a silver halide photographic material with a 1-carbamoyloxypyridinium saltAGFA GEVAERT AG·Filed 1977·Granted Oct 25, 1977·5 cites·11 claims
- 1864US4524123AChelatable 4-thienyl imidazole azo dyes, their use in color photographic recording materialAGFA GEVAERT AG·Filed 1984·Granted Jun 18, 1985·7 cites·2 claims
- 1962US5821044APhotographic silver halide emulsionsAGFA GEVAERT AG·Filed 1997·Granted Oct 13, 1998·4 cites·8 claims
- 2062US5021330AColor photographic recording material containing a coupler releasing a photographically active compoundAGFA GEVAERT AG·Filed 1990·Granted Jun 4, 1991·24 cites·7 claims
- 2160US4418143AColor photographic recording materialAGFA GEVAERT AG·Filed 1982·Granted Nov 29, 1983·6 cites·5 claims
- 2260US4323646AProcess for hardening a photographic materialAGFA GEVAERT AG·Filed 1980·Granted Apr 6, 1982·8 cites·14 claims
- 2359US4349624APhotographic silver halide materialAGFA GEVAERT AG·Filed 1980·Granted Sep 14, 1982·8 cites·6 claims
- 2459US4294920APhotographic silver halide emulsionAGFA GEVAERT AG·Filed 1980·Granted Oct 13, 1981·8 cites·6 claims
- 2559US4013468AMethod of hardening a protein-containing layer of a silver halide photographic material with an alkyl ester of 1,2-dihydroquinoline-N-carboxylic acidAGFA GEVAERT AG·Filed 1974·Granted Mar 22, 1977·4 cites·11 claims
- 2658US5463072AProcess for the preparation of naphtholic 2-equivalent cyan couplersAGFA GEVART AG D 51368·Filed 1993·Granted Oct 31, 1995·7 cites·12 claims
- 2757US4338394AProcess for hardening photographic gelatinAGFA GEVAERT AG·Filed 1980·Granted Jul 6, 1982·7 cites·5 claims
- 2856US5888717APhotographic silver halide emulsionAGFA GEVAERT AG·Filed 1997·Granted Mar 30, 1999·3 cites·9 claims
- 2956US4461827AColor photographic recording material containing a non-diffusible dye releaser from which a complexible azo dye is released during developmentAGFA GEVAERT AG·Filed 1983·Granted Jul 24, 1984·5 cites·2 claims
- 3055US5200306AColor photographic recording material containing a coupler which releases a photographically active compoundAGFA GEVAERT AG·Filed 1991·Granted Apr 6, 1993·5 cites·8 claims
- 3152US6171773B1Color photographic print materialAGFA N V·Filed 1999·Granted Jan 9, 2001·3 cites·12 claims
- 3252US4186014ALight sensitive photographic material containing a mordant layerAGFA GEVAERT AG·Filed 1977·Granted Jan 29, 1980·11 cites·2 claims
- 3348US5935688AInkjet recording materialAGFA GEVAERT AG·Filed 1997·Granted Aug 10, 1999·7 cites·10 claims
- 3447US4559296APhotographic recording material containing new azo dyesAGFA GEVAERT AG·Filed 1984·Granted Dec 17, 1985·3 cites·11 claims
- 3545US4767698APhotographic material containing a pyridine azo or pyridazine azo cyan dye releasing compoundAGFA GEVAERT AG·Filed 1987·Granted Aug 30, 1988·3 cites·3 claims
- 3645US4284718APhotographic silver halide materials containing sulfur containing polymersAGFA GEVAERT AG·Filed 1980·Granted Aug 18, 1981·4 cites·6 claims
- 3744US4870000AColor photograhic recording material containing a coupler which releases a photographically active compoundAGFA GEVAERT AG·Filed 1988·Granted Sep 26, 1989·10 cites·7 claims
- 3843US4579817AColor photographic recording material containing dye-releasers releasing 6-arylazo-2-amino-3-pyridinol dyes which are chelatable with metal ionsAGFA GEVAERT AG·Filed 1984·Granted Apr 1, 1986·3 cites·4 claims
- 3942US6498002B2Photographic silver halide materialAGFA GEVAERT·Filed 2001·Granted Dec 24, 2002·0 cites·16 claims
- 4042US4386155AProcess for the production of photographic imagesAGFA GEVAERT AG·Filed 1981·Granted May 31, 1983·3 cites·3 claims
- 4141US4393132APhotographic recording material with arylazocyanoacetic ester dye releasersAGFA GEVAERT AG·Filed 1982·Granted Jul 12, 1983·2 cites·2 claims
- 4238US5021332AColor photographic recording material containing a DIR couplerAGFA GEVAERT AG·Filed 1990·Granted Jun 4, 1991·6 cites·5 claims
- 4337US6498003B2Photographic silver halide materialAGFA GEVAERT·Filed 2001·Granted Dec 24, 2002·0 cites·19 claims
- 4437US6498001B1Photographic silver halide emulsionAGFA GEVAERT·Filed 2001·Granted Dec 24, 2002·0 cites·15 claims
- 4537US6261758B1Production of silver halide emulsionsAGFA GEVAERT·Filed 2000·Granted Jul 17, 2001·0 cites·13 claims
- 4637US5855657AInkjet inkAGFA GEVAERT AG·Filed 1997·Granted Jan 5, 1999·5 cites·7 claims
- 4736US4579805AColor photographic recording material containing a thiophene azo dye releaser for cyan dyesAGFA GEVAERT AG·Filed 1984·Granted Apr 1, 1986·2 cites·6 claims
- 4835US5885760AColor photographic recording materialAGFA GEVAERT AG·Filed 1997·Granted Mar 23, 1999·1 cites·10 claims
- 4935US4446219APhotographic material comprising a layer with Ni complex of 2,2'-bisphenolAGFA GEVAERT AG·Filed 1982·Granted May 1, 1984·2 cites·5 claims
- 5034US5908741APhotographic silver halide materialAGFA GEVAERT AG·Filed 1996·Granted Jun 1, 1999·0 cites·1 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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