Inventor · disambiguated record
Atsuhiro Ohkawa
Also filed as: OHKAWA ATSUHIRO
41 granted patents·1 pending application·343 citations·filing 1989–2008
98Inventor score
Top patents by PatentIndex Score
42 records- 0191US6051359AHeat developable light-sensitive material and method of forming color imagesFUJI PHOTO FILM CO LTD·Filed 1997·Granted Apr 18, 2000·20 cites·15 claims
- 0290US4960895A4'-alkoxy-2,2':6',2"-terpyridine derivativesFUJI PHOTO FILM CO LTD·Filed 1989·Granted Oct 2, 1990·39 cites·1 claims
- 0389US6197725B1Heat-sensitive recording materialFUJI PHOTO FILM CO LTD·Filed 1998·Granted Mar 6, 2001·17 cites·10 claims
- 0487US6060206APhoto- and heat-sensitive recording material and colorant produced from the materialFUJI PHOTO FILM CO LTD·Filed 1998·Granted May 9, 2000·17 cites·19 claims
- 0585US6143480ALeuco dye and image recording medium containing the sameFUJI PHOTO FILM CO LTD·Filed 1999·Granted Nov 7, 2000·43 cites·8 claims
- 0681US6329121B2Image recording medium, image recording method and heat coloring polymer compoundFUJI PHOTO FILM CO LTD·Filed 2000·Granted Dec 11, 2001·13 cites·7 claims
- 0780US5514529ASilver halide color photographic light-sensitive material containing chemically sensitized grains and pug compoundFUJI PHOTO FILM CO LTD·Filed 1992·Granted May 7, 1996·11 cites·12 claims
- 0879US6432876B1Image-recording medium containing self-developing leuco dyeFUJI PHOTO FILM CO LTD·Filed 2000·Granted Aug 13, 2002·5 cites·8 claims
- 0979US6100009AImage recording medium, image recording method and heat coloring polymer compoundFUJI PHOTO FILM CO LTD·Filed 1998·Granted Aug 8, 2000·46 cites·17 claims
- 1078US5112730ASilver halide color photographic material comprising a yellow-colored cyan couplerFUJI PHOTO FILM CO LTD·Filed 1990·Granted May 12, 1992·11 cites·10 claims
- 1177US6409328B1Method of forming images and material for image formationFUJI PHOTO FILM CO LTD·Filed 2000·Granted Jun 25, 2002·11 cites·6 claims
- 1276US7364670B2Liquid crystalline compound, liquid crystalline composition and retardation filmFUJIFILM CORP·Filed 2004·Granted Apr 29, 2008·14 cites·18 claims
- 1369US7169325B2Liquid crystalline compound, liquid crystalline composition and retardation filmFUJI PHOTO FILM CO LTD·Filed 2004·Granted Jan 30, 2007·10 cites·15 claims
- 1469US7128953B2Optical film comprising support and polarizing layerFUJI PHOTO FILM CO LTD·Filed 2002·Granted Oct 31, 2006·10 cites·17 claims
- 1568US7534475B2Liquid crystal compound comprising two condensed and substituted ringsFUJIFILM CORP·Filed 2005·Granted May 19, 2009·3 cites·10 claims
- 1668US7534371B2Liquid crystalline compound, liquid crystalline composition and retardation filmFUJIFILM CORP·Filed 2008·Granted May 19, 2009·2 cites·4 claims
- 1766US7273641B2Optically anisotropic element comprising discotic compoundFUJIFILM CORP·Filed 2005·Granted Sep 25, 2007·2 cites·17 claims
- 1865US7314654B2Optically anisotropic element comprising discotic compoundFUJIFILM CORP·Filed 2005·Granted Jan 1, 2008·2 cites·16 claims
- 1963US7175889B2Retardation film and compoundFUJI PHOTO FILM CO LTD·Filed 2004·Granted Feb 13, 2007·7 cites·6 claims
- 2061US5326680ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1992·Granted Jul 5, 1994·5 cites·9 claims
- 2160US5360709ASilver halide photographic material containing a DIR compoundFUJI PHOTO FILM CO LTD·Filed 1993·Granted Nov 1, 1994·5 cites·6 claims
- 2257US7153548B2Compound, retardation plate and method for forming optically anisotropic layerFUJI PHOTO FILM CO LTD·Filed 2004·Granted Dec 26, 2006·4 cites·6 claims
- 2357US6203964B1Image recording medium and image recording methodFUJI PHOTO FILM CO LTD·Filed 2000·Granted Mar 20, 2001·1 cites·20 claims
- 2456US5104988A4'-alkoxy-2,2':6',2"-terpyridine derivatives and metal complexes thereofFUJI PHOTO FILM CO LTD·Filed 1990·Granted Apr 14, 1992·7 cites·3 claims
- 2550US6329120B1Image recording medium, image recording method and heat coloring polymer compoundFUJI PHOTO FILM CO LTD·Filed 2000·Granted Dec 11, 2001·6 cites·10 claims
- 2649US7250116B2Liquid crystal composition, polymerization product, retardation plate and ellipsoidally polarizing plateFUJIFILM CORP·Filed 2004·Granted Jul 31, 2007·2 cites·15 claims
- 2746US5529894ASilver halide photographic material containing a coupler capable of releasing a plurality of photographically useful groups or precursors thereofFUJI PHOTO FILM CO LTD·Filed 1994·Granted Jun 25, 1996·2 cites·15 claims
- 2844US6562542B2Image-forming material and novel sulfonic acid ester derivativeFUJI PHOTO FILM CO LTD·Filed 2001·Granted May 13, 2003·5 cites·13 claims
- 2944US5306603ASilver halide color photographic light-sensitive material, and method of processing the sameFUJI PHOTO FILM CO LTD·Filed 1992·Granted Apr 26, 1994·2 cites·20 claims
- 3043US5403703ASilver halide color photographic light-sensitive material, and method or processing the sameFUJI PHOTO FILM CO LTD·Filed 1992·Granted Apr 4, 1995·2 cites·12 claims
- 3142US5286620ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Feb 15, 1994·2 cites·9 claims
- 3241US5021329ASilver halide photographic material containing a dye precursor residueFUJI PHOTO FILM CO LTD·Filed 1989·Granted Jun 4, 1991·2 cites·19 claims
- 3341US2004219305A1Retardation film and elliptically polarizing filmFUJI PHOTO FILM CO LTD·Filed 2004·Application pending·0 cites
- 3437US6316161B1Image recording medium comprising compound generating acid by action of heat, acid or lightFUJI PHOTO FILM CO LTD·Filed 1999·Granted Nov 13, 2001·5 cites·5 claims
- 3535US5350666ASilver halide photographic materialsFUJI PHOTO FILM CO LTD·Filed 1991·Granted Sep 27, 1994·4 cites·10 claims
- 3633US5837438ASilver halide color photographic photosensitive materialFUJI PHOTO FILM CO LTD·Filed 1993·Granted Nov 17, 1998·0 cites·15 claims
- 3733US5447833ASilver halide photographic material and imidazole derivativesFUJI PHOTO FILM CO LTD·Filed 1994·Granted Sep 5, 1995·3 cites·10 claims
- 3832US5498513ASilver halide color photographic photosensitive materialsFUJI PHOTO FILM CO LTD·Filed 1994·Granted Mar 12, 1996·2 cites·21 claims
- 3931US5665529AColor diffusion transfer photographic materialFUJI PHOTO FILM CO LTD·Filed 1996·Granted Sep 9, 1997·0 cites·1 claims
- 4031US5547824ASilver halide color photographic light-sensitive material containing compounds capable of releasing photographically useful groups and a specific silver iodobromideFUJI PHOTO FILM CO LTD·Filed 1992·Granted Aug 20, 1996·1 cites·15 claims
- 4131US5496680AColor diffusion transfer element with benzenesulfonamideFUJI PHOTO FILM CO LTD·Filed 1994·Granted Mar 5, 1996·0 cites·18 claims
- 4231US5362877AProcess of synthesizing acetalsFUJI PHOTO FILM CO LTD·Filed 1993·Granted Nov 8, 1994·0 cites·20 claims
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