Inventor · disambiguated record
Philip T. S. Lau
Also filed as: LAU PHILIP · LAU PHILIP T · LAU PHILIP T S
51 granted patents·589 citations·filing 1975–2000
98Inventor score
Files withEASTMAN KODAK CO51
Top patents by PatentIndex Score
51 records- 0198US4333999ACyan dye-forming couplersEASTMAN KODAK CO·Filed 1980·Granted Jun 8, 1982·85 cites·20 claims
- 0298US4248962APhotographic emulsions, elements and processes utilizing release compoundsEASTMAN KODAK CO·Filed 1978·Granted Feb 3, 1981·171 cites·63 claims
- 0396US5962198APhotographic elements containing cyan dye-forming coupler having a particular formulaEASTMAN KODAK CO·Filed 1997·Granted Oct 5, 1999·31 cites·24 claims
- 0496US5686235APhotographic elements containing cyan dye-forming coupler having a sulfone ballast groupEASTMAN KODAK CO·Filed 1996·Granted Nov 11, 1997·31 cites·17 claims
- 0594US4401752AAryloxy substituted photographic couplers and photographic elements and processes employing sameEASTMAN KODAK CO·Filed 1981·Granted Aug 30, 1983·40 cites·18 claims
- 0690US5888716APhotographic element containing improved coupler setEASTMAN KODAK CO·Filed 1996·Granted Mar 30, 1999·18 cites·24 claims
- 0786US4552834AEnhanced bleaching of photographic elements containing silver halide and adsorbed dyeEASTMAN KODAK CO·Filed 1985·Granted Nov 12, 1985·27 cites·32 claims
- 0885US5674666APhotographic elements containing new cyan dye-forming coupler providing improved color reproductionEASTMAN KODAK CO·Filed 1996·Granted Oct 7, 1997·12 cites·17 claims
- 0984US4777120APhotographic element and process comprising a masking couplerEASTMAN KODAK CO·Filed 1987·Granted Oct 11, 1988·16 cites·10 claims
- 1081US5118599AYellow couplers for photographic elements and processesEASTMAN KODAK CO·Filed 1991·Granted Jun 2, 1992·26 cites·16 claims
- 1179US6048680APhotographic element containing pyrazoloazole coupler and a specific anti-fading combinationEASTMAN KODAK CO·Filed 1998·Granted Apr 11, 2000·9 cites·18 claims
- 1279US4612278APhotographic materials and process comprising polymeric couplers with alkoxyalkylacrylate comonomersEASTMAN KODAK CO·Filed 1985·Granted Sep 16, 1986·17 cites·23 claims
- 1373US5262284AArylidene pyrazolone couplerEASTMAN KODAK CO·Filed 1991·Granted Nov 16, 1993·9 cites·15 claims
- 1472US4157919ASilver halide emulsions containing yellow-dye-forming couplersEASTMAN KODAK CO·Filed 1978·Granted Jun 12, 1979·9 cites·10 claims
- 1571US5842063ACamera and film for recording overlapping imagesEASTMAN KODAK CO·Filed 1996·Granted Nov 24, 1998·11 cites·8 claims
- 1666US5141844APolymeric dye-forming couplersEASTMAN KODAK CO·Filed 1990·Granted Aug 25, 1992·6 cites·6 claims
- 1762US5670302APhotographic elements containing new magenta dye-forming couplersEASTMAN KODAK CO·Filed 1996·Granted Sep 23, 1997·4 cites·18 claims
- 1861US6004738APhotographic elements containing cyan dye-forming coupler, coupler solvent and bisphenol derivativeEASTMAN KODAK CO·Filed 1997·Granted Dec 21, 1999·4 cites·22 claims
- 1960US4804620APhotographic material containing a novel polymeric dye-forming couplerEASTMAN KODAK CO·Filed 1987·Granted Feb 14, 1989·7 cites·8 claims
- 2057US5726002APhotographic element containing a particular cyan coupler dispersed in a phenolic solventEASTMAN KODAK CO·Filed 1996·Granted Mar 10, 1998·3 cites·13 claims
- 2157US3998642ASilver halide emulsions with incorporated 4,6-difluorophenolic couplersEASTMAN KODAK CO·Filed 1975·Granted Dec 21, 1976·6 cites·7 claims
- 2256US4914005APhotographic element containing a cyan dye forming couplerEASTMAN KODAK CO·Filed 1989·Granted Apr 3, 1990·6 cites·8 claims
- 2352US6136522APhotographic element containing pyrazoloazole coupler and a specific anti-fading combinationEASTMAN KODAK CO·Filed 1998·Granted Oct 24, 2000·2 cites·18 claims
- 2451US5834166APhotographic element containing a particular cyan dye-forming couplerEASTMAN KODAK CO·Filed 1996·Granted Nov 10, 1998·2 cites·21 claims
- 2550US5382502AHydroxyquinoline cyan couplers and their process of productionEASTMAN KODAK CO·Filed 1993·Granted Jan 17, 1995·3 cites·12 claims
- 2645US5427898AYellow couplers having an arloxy coupling-off group which contains an ortho polarizable functional groupEASTMAN KODAK CO·Filed 1994·Granted Jun 27, 1995·2 cites·18 claims
- 2745US5055385APhotographic elements containing release compounds-IIEASTMAN KODAK CO·Filed 1991·Granted Oct 8, 1991·10 cites·12 claims
- 2843US5654132APhotographic materials and process comprising ureido naphtholic cyan couplersEASTMAN KODAK CO·Filed 1996·Granted Aug 5, 1997·1 cites·11 claims
- 2943US5360713AYellow dye-forming couplers and color photographic elements containing these couplersEASTMAN KODAK CO·Filed 1992·Granted Nov 1, 1994·2 cites·15 claims
- 3042US5034311APhotographic elements containing release compounds IEASTMAN KODAK CO·Filed 1990·Granted Jul 23, 1991·8 cites·12 claims
- 3142US4435495ARelease of photographic reagents with 3-pyrazolidone developing agentsEASTMAN KODAK CO·Filed 1982·Granted Mar 6, 1984·3 cites·21 claims
- 3241US5091291AAlkyl substituted photographic couplers and photographic elements and processes employing sameEASTMAN KODAK CO·Filed 1990·Granted Feb 25, 1992·2 cites·15 claims
- 3340US5523199APhotographic element and process employing magenta azine dye-forming couplersEASTMAN KODAK CO·Filed 1994·Granted Jun 4, 1996·1 cites·20 claims
- 3438US5614357APhotographic element containing a particular cyan coupler bearing a sulfonyl containing ballastEASTMAN KODAK CO·Filed 1996·Granted Mar 25, 1997·1 cites·15 claims
- 3538US5476757APhotographic element containing a novel cyan dye forming coupler and process for its useEASTMAN KODAK CO·Filed 1994·Granted Dec 19, 1995·1 cites·12 claims
- 3637US6458521B1Color photographic element containing coupler useful for forming neutral silver-based imageEASTMAN KODAK CO·Filed 2000·Granted Oct 1, 2002·3 cites·21 claims
- 3734US5965342APhotographic elements containing specified cyan dye-forming couplers for improved heat and light stabilityEASTMAN KODAK CO·Filed 1997·Granted Oct 12, 1999·0 cites·9 claims
- 3834US5457008APhotographic element containing a novel cyan dye forming coupler and process for its useEASTMAN KODAK CO·Filed 1994·Granted Oct 10, 1995·0 cites·14 claims
- 3933US5457020APhotographic material and process comprising a bicyclic pyrazolo couplerEASTMAN KODAK CO·Filed 1992·Granted Oct 10, 1995·0 cites·10 claims
- 4033US5340708APhotographic elements containing new dye-forming tris couplersEASTMAN KODAK CO·Filed 1993·Granted Aug 23, 1994·0 cites·7 claims
- 4132US5681689APhotographic material containing acrylate or acrylamide based yellow dye-forming couplersEASTMAN KODAK CO·Filed 1996·Granted Oct 28, 1997·0 cites·21 claims
- 4232US5508148APhotographic element containing a novel cyan dye forming coupler and process for its useEASTMAN KODAK CO·Filed 1994·Granted Apr 16, 1996·0 cites·12 claims
- 4332US5358838APhotographic elements containing new yellow-dye-forming tris couplersEASTMAN KODAK CO·Filed 1993·Granted Oct 25, 1994·0 cites·6 claims
- 4432US5358835APhotographic elements containing new yellow-dye-forming tris couplersEASTMAN KODAK CO·Filed 1993·Granted Oct 25, 1994·0 cites·6 claims
- 4532US5237030APolymeric couplers prepared in the presence of a coupler solventEASTMAN KODAK CO·Filed 1990·Granted Aug 17, 1993·0 cites·1 claims
- 4632US4990436ACyan dye-forming couplers and photographic recording materials containing sameEASTMAN KODAK CO·Filed 1990·Granted Feb 5, 1991·0 cites·10 claims
- 4731US5358836APhotographic elements containing new magenta-dye-forming tris couplersEASTMAN KODAK CO·Filed 1993·Granted Oct 25, 1994·0 cites·8 claims
- 4831US4992359APolymeric couplersEASTMAN KODAK CO·Filed 1990·Granted Feb 12, 1991·0 cites·6 claims
- 4930US5358837APhotographic elements containing new magenta-dye-forming bis couplersEASTMAN KODAK CO·Filed 1993·Granted Oct 25, 1994·0 cites·8 claims
- 5030US4940812A5-substituted aminophenolsEASTMAN KODAK CO·Filed 1989·Granted Jul 10, 1990·0 cites·4 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →