Inventor · disambiguated record
Gerald Jan
Also filed as: HAGEN REMON · JAN GERALD · JAN GERALD C
23 granted patents·1 pending application·154 citations·filing 1976–2009
95Inventor score
Top patents by PatentIndex Score
24 records- 0185US7828886B2Anthrapyridone dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 2009·Granted Nov 9, 2010·7 cites·10 claims
- 0284US4521591AOil-soluble disazo dyes and their use in color-photographic recording materials for the silver dye bleach processCIBA GEIGY AG·Filed 1982·Granted Jun 4, 1985·17 cites·4 claims
- 0380US4304846AMethod for processing silver dye-bleach materialsCIBA GEIGY AG·Filed 1980·Granted Dec 8, 1981·18 cites·26 claims
- 0479US4266011AProcess for the production of colored photographic images by the silver dye-bleach processCIBA GEIGY AG·Filed 1979·Granted May 5, 1981·8 cites·20 claims
- 0576US4379819AColor-photographic recording material for the silver dye bleach processCIBA GEIGY AG·Filed 1981·Granted Apr 12, 1983·12 cites·17 claims
- 0674US6320031B1Monoazo dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 2000·Granted Nov 20, 2001·12 cites·10 claims
- 0766US4404273AProcess for the production of photographic color images by the silver dye bleach processCIBA GEIGY AG·Filed 1981·Granted Sep 13, 1983·8 cites·25 claims
- 0866US4202698AQuinoxalines and their use in photographic processesCIBA GEIGY AG·Filed 1979·Granted May 13, 1980·5 cites·12 claims
- 0964US4138256AMethod of processing photographic silver dye bleach materialsCIBA GEIGY AG·Filed 1976·Granted Feb 6, 1979·7 cites·14 claims
- 1063US6562115B2Azo dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 2001·Granted May 13, 2003·4 cites·11 claims
- 1158US6068687AAzo dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 1998·Granted May 30, 2000·18 cites·18 claims
- 1257US4369318AProcess for the production of colored photographic images by the silver dye-bleach processCIBA GEIGY·Filed 1980·Granted Jan 18, 1983·3 cites·4 claims
- 1353US7632345B2Phthalocyanine dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 2007·Granted Dec 15, 2009·0 cites·11 claims
- 1453US5824785ADyes for ink jet printingILFORD IMAGING CH GMBH·Filed 1996·Granted Oct 20, 1998·15 cites·8 claims
- 1552US5684140ADyes for ink jet printingILFORD AG·Filed 1996·Granted Nov 4, 1997·5 cites·9 claims
- 1652US5043257AAzo dyes for photographic silver dye bleach materialILFORD LTD·Filed 1989·Granted Aug 27, 1991·4 cites·12 claims
- 1750US4145217AQuinoxalines and their use in photographic processesCIBA GEIGY AG·Filed 1977·Granted Mar 20, 1979·2 cites·9 claims
- 1847US4357280AUse of tertiary phosphines in photographic silver dye bleach materialsCIBA GEIGY AG·Filed 1981·Granted Nov 2, 1982·2 cites·1 claims
- 1947US2008022467A1Disazo dyes and their preparation and useILFORD IMAGING CH GMBH·Filed 2007·Application pending·0 cites
- 2046US4323682AQuinoxalines and their use in photographic processesCIBA GEIGY AG·Filed 1979·Granted Apr 6, 1982·3 cites·3 claims
- 2144US4465763AProcess for the production of photographic color images by the silver dye bleach processCIBA GEIGY AG·Filed 1983·Granted Aug 14, 1984·2 cites·1 claims
- 2236US4216320AQuinoxaline bleach catalystsCIBA GEIGY AG·Filed 1978·Granted Aug 5, 1980·0 cites·4 claims
- 2332US4456668AAzo dyes containing phosphamic acid diester groupsCIBA GEIGY AG·Filed 1982·Granted Jun 26, 1984·2 cites·10 claims
- 2431US4409143AMonoazo dyes containing phosphamic acid diester groupsCIBA GEIGY AG·Filed 1981·Granted Oct 11, 1983·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →