Inventor · disambiguated record
Roger Lok
Also filed as: LOK ROGER · LOK ROGER L
67 granted patents·1 pending application·550 citations·filing 1981–2003
99Inventor score
Top patents by PatentIndex Score
68 records- 0197US5320938AHigh chloride tabular grain emulsions and processes for their preparationEASTMAN KODAK CO·Filed 1993·Granted Jun 14, 1994·77 cites·85 claims
- 0296US5736310ACubical grain silver iodochloride emulsions and processes for their preparationEASTMAN KODAK CO·Filed 1996·Granted Apr 7, 1998·41 cites·23 claims
- 0395US5726005APhotographic print elements containing cubical grain silver iodochloride emulsionsEASTMAN KODAK CO·Filed 1996·Granted Mar 10, 1998·32 cites·23 claims
- 0494US5620841APhotographic element containing new gold(I) compoundsEASTMAN KODAK CO·Filed 1996·Granted Apr 15, 1997·23 cites·18 claims
- 0594US5547827AIodochloride emulsions containing quinones having high sensitivity and low fogEASTMAN KODAK CO·Filed 1994·Granted Aug 20, 1996·31 cites·19 claims
- 0692US5605789AIodochloride emulsions containing iodonium salts having high sensitivity and low fogEASTMAN KODAK CO·Filed 1994·Granted Feb 25, 1997·22 cites·35 claims
- 0792US5550013AHigh chloride emulsions having high sensitivity and low fog and improved photographic responses of HIRF, higher gamma, and shoulder densityEASTMAN KODAK CO·Filed 1994·Granted Aug 27, 1996·22 cites·22 claims
- 0890US5792601AComposite silver halide grains and processes for their preparationEASTMAN KODAK CO·Filed 1996·Granted Aug 11, 1998·18 cites·25 claims
- 0989US4451557APhotographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elementsEASTMAN KODAK CO·Filed 1983·Granted May 29, 1984·24 cites·16 claims
- 1088US5945270APhotographic element containing water soluble bis Au(I) complexesEASTMAN KODAK CO·Filed 1997·Granted Aug 31, 1999·16 cites·43 claims
- 1187US4378426APhotographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elementsEASTMAN KODAK CO·Filed 1981·Granted Mar 29, 1983·18 cites·16 claims
- 1285US5912111AGold(I) sensitizers for silver halide emulsionsEASTMAN KODAK CO·Filed 1998·Granted Jun 15, 1999·14 cites·30 claims
- 1385US5912112AAu(I) sensitizers for silver halide emulsionsEASTMAN KODAK CO·Filed 1998·Granted Jun 15, 1999·14 cites·24 claims
- 1481US5939245AAu(I) sensitizers for silver halide emulsionsEASTMAN KODAK CO·Filed 1997·Granted Aug 17, 1999·11 cites·28 claims
- 1580US6689335B1Silver ion sequester and release agentEASTMAN KODAK CO·Filed 2002·Granted Feb 10, 2004·21 cites·34 claims
- 1678US5413905APhotographic sensitivity increasing alkynylamine compounds and photographic elementsEASTMAN KODAK CO·Filed 1993·Granted May 9, 1995·10 cites·18 claims
- 1775US5292635AThiosulfonate-sulfinate stabilizers for photosensitive emulsionsEASTMAN KODAK CO·Filed 1990·Granted Mar 8, 1994·9 cites·21 claims
- 1873US6322961B1Color reversal photographic element containing emulsion sensitized with organomercapto AU(1) complexes and rapid sulfiding agentsEASTMAN KODAK CO·Filed 2000·Granted Nov 27, 2001·4 cites·20 claims
- 1972US6280922B1High chloride silver halide elements containing activated precursors to thiolic stabilizersEASTMAN KODAK CO·Filed 2000·Granted Aug 28, 2001·3 cites·22 claims
- 2072US5700631APhotographic element containing new gold(I) compoundsEASTMAN KODAK CO·Filed 1996·Granted Dec 23, 1997·15 cites·20 claims
- 2172US5399479APhotographic element exhibiting improved speed and stabilityEASTMAN KODAK CO·Filed 1993·Granted Mar 21, 1995·7 cites·22 claims
- 2271US6296998B1Photographic element containing bis Au(I) complexes and sulfiding agentEASTMAN KODAK CO·Filed 2000·Granted Oct 2, 2001·3 cites·18 claims
- 2370US5370986AStabilization of photographic recording materialsEASTMAN KODAK CO·Filed 1992·Granted Dec 6, 1994·7 cites·19 claims
- 2468US5693460ASilver halide photographic elements containing dioxide compunds a stabilizersEASTMAN KODAK CO·Filed 1996·Granted Dec 2, 1997·5 cites·20 claims
- 2568US4607000AAmido substituted divalent chalcogenide fog inhibiting agents for silver halide photographyEASTMAN KODAK CO·Filed 1985·Granted Aug 19, 1986·8 cites·15 claims
- 2667US5719019ARoom-light handleable direct reversal silver halide emulsions containing nitro-substituted imidazole rereversal suppressantsEASTMAN KODAK CO·Filed 1996·Granted Feb 17, 1998·6 cites·20 claims
- 2763US5670307ASilver halide emulsions with improved heat stabilityEASTMAN KODAK CO·Filed 1996·Granted Sep 23, 1997·4 cites·20 claims
- 2863US5478721APhotographic elements containing emulsion stabilizersEASTMAN KODAK CO·Filed 1995·Granted Dec 26, 1995·4 cites·15 claims
- 2961US5686236APhotographic element containing new gold (I) compoundsEASTMAN KODAK CO·Filed 1997·Granted Nov 11, 1997·3 cites·2 claims
- 3060US5411855APhotographic element exhibiting improved speed and stabilityEASTMAN KODAK CO·Filed 1993·Granted May 2, 1995·5 cites·20 claims
- 3160US5389510APhotographic elements containing alkynylamine dopantsEASTMAN KODAK CO·Filed 1993·Granted Feb 14, 1995·5 cites·15 claims
- 3259US6686143B1Silver halide photographic elements containing bis Au(I) sensitizersEASTMAN KODAK CO·Filed 2002·Granted Feb 3, 2004·1 cites·30 claims
- 3358US5968724ASilver halide photographic elements with reduced fogEASTMAN KODAK CO·Filed 1998·Granted Oct 19, 1999·3 cites·21 claims
- 3458US5756278ACombination of dithiolone dioxides with gold sensitizers in AGCL photographic elementsEASTMAN KODAK CO·Filed 1997·Granted May 26, 1998·3 cites·19 claims
- 3558US5443947AHeat stabilized silver chloride photographic emulsions containing thiosulfonate/sulfinate compoundsEASTMAN KODAK CO·Filed 1993·Granted Aug 22, 1995·4 cites·15 claims
- 3657US5500333AClass of compounds which increases and stabilizes photographic speedEASTMAN KODAK CO·Filed 1993·Granted Mar 19, 1996·4 cites·20 claims
- 3756US6368781B1Heat sensitivity improvement with combinations of gold sensitization and spectral sensitizing dye and filter deviceEASTMAN KODAK CO·Filed 1999·Granted Apr 9, 2002·4 cites·24 claims
- 3856US6306283B1Method for screening chemical sensitizersEASTMAN KODAK CO·Filed 1998·Granted Oct 23, 2001·3 cites·10 claims
- 3952US6034249AStable and water soluble bis Au(I) complexes and their synthesisEASTMAN KODAK CO·Filed 1997·Granted Mar 7, 2000·4 cites·15 claims
- 4051US5914226ASilver halide emulsions with improved heat stabilityEASTMAN KODAK CO·Filed 1997·Granted Jun 22, 1999·2 cites·20 claims
- 4151US5677119ASilver halide photographic elements containing dithiolone 1 oxide compoundsEASTMAN KODAK CO·Filed 1996·Granted Oct 14, 1997·2 cites·20 claims
- 4251US5601970APhotographic elements exhibiting improved stabilityEASTMAN KODAK CO·Filed 1995·Granted Feb 11, 1997·2 cites·12 claims
- 4348US6696586B1Bis AU(I) sensitizers and their synthesisEASTMAN KODAK CO·Filed 2002·Granted Feb 24, 2004·0 cites·28 claims
- 4446US5491056AProcess of forming a photographic emulsionEASTMAN KODAK CO·Filed 1994·Granted Feb 13, 1996·2 cites·12 claims
- 4546US4861703ACyclic dichalcogenide fog inhibiting agents for silver halide photographyEASTMAN KODAK CO·Filed 1988·Granted Aug 29, 1989·4 cites·9 claims
- 4645US5952166AEnhanced sensitivity from thiolone dioxides in cubic silver chloride emulsions with sharp cornersEASTMAN KODAK CO·Filed 1998·Granted Sep 14, 1999·1 cites·17 claims
- 4745US4957855APhotographic recording material with improved raw stock keepingEASTMAN KODAK CO·Filed 1989·Granted Sep 18, 1990·4 cites·6 claims
- 4844US4661438AQuaternized tellurium salt fog inhibiting agents for silver halide photographyEASTMAN KODAK CO·Filed 1986·Granted Apr 28, 1987·4 cites·26 claims
- 4943US6365746B1Stable and water soluble bis Au(I) complexes and their synthesisEASTMAN KODAK CO·Filed 1999·Granted Apr 2, 2002·2 cites·14 claims
- 5041US5536633AHeat stabilized silver chloride photographic emulsions containing sulfur donors and sulfinate compoundsEASTMAN KODAK CO·Filed 1995·Granted Jul 16, 1996·1 cites·16 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →