Inventor · disambiguated record
Katsuyoshi Yamakawa
Also filed as: YAMAKAWA KATSUYOSHI
38 granted patents·7 pending applications·251 citations·filing 1978–2009
97Inventor score
Top patents by PatentIndex Score
45 records- 0197US5143824ASilver halide color photographic material containing cyan dye-forming couplerFUJI PHOTO FILM CO LTD·Filed 1991·Granted Sep 1, 1992·53 cites·26 claims
- 0296US5120637ASilver halide color photographic light-sensitive material containing an emulsified dispersion of oleophilic fine particles obtained by dispersing a solution containing a cyan coupler and a polymerFUJI PHOTO FILM CO LTD·Filed 1989·Granted Jun 9, 1992·42 cites·12 claims
- 0392US5508421APyrrolotriazole azomethine dye, and heat transfer dye providing material containing a pyrrolotriazole azomethine dyeFUJI PHOTO FILM CO LTD·Filed 1994·Granted Apr 16, 1996·19 cites·9 claims
- 0491US5202224ADye-forming coupler, a silver halide color photographic material using same, and a method for processing the silver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Apr 13, 1993·21 cites·18 claims
- 0585US6600034B2Method of producing cellulose polymersFUJI PHOTO FILM CO LTD·Filed 2001·Granted Jul 29, 2003·23 cites·14 claims
- 0682US6383276B1Azomethine compound and oily magenta inkFUJI PHOTO FILM CO LTD·Filed 2000·Granted May 7, 2002·13 cites·13 claims
- 0781US5631122ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1993·Granted May 20, 1997·12 cites·11 claims
- 0876US7838670B2Naphthalocyanine compound and method for producing the sameFUJIFILM CORP·Filed 2006·Granted Nov 23, 2010·3 cites·6 claims
- 0975US7217839B2Method of producing near-infrared absorbing dye compoundFUJIFILM CORP·Filed 2006·Granted May 15, 2007·3 cites·7 claims
- 1071US5362882APyrrolotriazole derivative and heat transfer dye providing material containing a pyrrolotriazole azomethine dyeFUJI PHOTO FILM CO LTD·Filed 1992·Granted Nov 8, 1994·9 cites·12 claims
- 1165US7875215B2Near-infrared-absorbing material and near-infrared-absorbing filterFUJIFILM CORP·Filed 2007·Granted Jan 25, 2011·2 cites·10 claims
- 1265US7339071B2Aryl ethynyl phthalic acid derivative and method for producing the sameFUJIFILM CORP·Filed 2005·Granted Mar 4, 2008·1 cites·10 claims
- 1362US6682662B2Fluorescent lamp cover and lighting fixtureFUJI PHOTO FILM CO LTD·Filed 2001·Granted Jan 27, 2004·6 cites·4 claims
- 1462US6624299B2Process for producing cellulose acetateFUJI PHOTO FILM CO LTD·Filed 2001·Granted Sep 23, 2003·2 cites·10 claims
- 1561US5401624ADye forming couplers and silver halide color photosensitive material containing the sameFUJI PHOTO FILM CO LTD·Filed 1993·Granted Mar 28, 1995·4 cites·10 claims
- 1661US5344933APyrrole ring-or condensed pyrrole ring-containing azomethine dyeFUJI PHOTO FILM CO LTD·Filed 1992·Granted Sep 6, 1994·10 cites·11 claims
- 1758US7838669B2Naphthalocyanine dye and method for producing the sameFUJIFILM CORP·Filed 2006·Granted Nov 23, 2010·1 cites·13 claims
- 1858US6866795B2Ultraviolet-absorbing film containing a fluorescent brightening agentFUJI PHOTO FILM CO LTD·Filed 2003·Granted Mar 15, 2005·4 cites·4 claims
- 1957US6548660B2Producing method of cellulose polymerFUJI PHOTO FILM CO LTD·Filed 2000·Granted Apr 15, 2003·2 cites·8 claims
- 2057US5326682ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1993·Granted Jul 5, 1994·4 cites·8 claims
- 2155US5260177ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1992·Granted Nov 9, 1993·5 cites·17 claims
- 2254US7812171B2Black pigment, black pigment dispersion and black resin composition comprising the sameFUJIFILM CORP·Filed 2007·Granted Oct 12, 2010·0 cites·6 claims
- 2349US7541459B2Method of producing amide compoundFUJIFILM CORP·Filed 2005·Granted Jun 2, 2009·0 cites·10 claims
- 2449US5006660AProcess for producing alkoxybenzene compound and aryloxybenzene compoundFUJI PHOTO FILM CO LTD·Filed 1989·Granted Apr 9, 1991·3 cites·23 claims
- 2548US7473802B2Method of producing near-infrared absorbing dye compoundFUJIFILM CORP·Filed 2006·Granted Jan 6, 2009·0 cites·16 claims
- 2648US2008169453A1Near infrared ray absorbing material and near infrared ray absorbing filterFUJIFILM CORP·Filed 2007·Application pending·0 cites
- 2746US2007073059A1Method of producing azomethine dye compoundFUJI PHOTO FILM CO LTD·Filed 2006·Application pending·0 cites
- 2846US2009202930A1Infrared dye composition, infrared ray absorbing ink and electrophotographic tonerFURUKAWA KAZUSHI·Filed 2009·Application pending·0 cites
- 2944US8021573B2Near-infrared-absorbing material and near-infrared-absorbing filterFUJIFILM CORP·Filed 2007·Granted Sep 20, 2011·0 cites·18 claims
- 3043US8293150B2Near-infrared absorbing materialKIMURA KEIZO·Filed 2007·Granted Oct 23, 2012·0 cites·4 claims
- 3143US5364941A5-acyl-4,5,6,7-tetrahydrothieno (3,2-C)pyridine-2-carboxylic acid derivative and process for producing the sameFUJI PHOTO FILM CO LTD·Filed 1993·Granted Nov 15, 1994·2 cites·16 claims
- 3243US2009117266A1Near-infrared-absorbing materialKIMURA KEIZO·Filed 2007·Application pending·0 cites
- 3342US7655814B2Process for producing croconic acid or salt thereofFUJIFILM CORP·Filed 2006·Granted Feb 2, 2010·0 cites·5 claims
- 3442US2002128488A1Azomethine compound and oily magenta inkFUJI PHOTO FILM CO LTD·Filed 2002·Application pending·0 cites
- 3542US2009162541A1Near-infrared-absorbing materialKIMURA KEIZO·Filed 2007·Application pending·0 cites
- 3641US6762303B2Method for producing pyridine compoundsFUJI PHOTO FILM CO LTD·Filed 2001·Granted Jul 13, 2004·0 cites·18 claims
- 3740US7244859B2Method for producing δ-aminopentadienoate derivativesFUJIFILM CORP·Filed 2003·Granted Jul 17, 2007·0 cites·21 claims
- 3838US2007073054A1Naphthalocyanine dye and method for producing the sameFUJI PHOTO FILM CO LTD·Filed 2006·Application pending·0 cites
- 3937US5296603A3-amino-5-o-chlorobenzyl-4,5,6,7-tetrahydrothieno[3,2-c]-pyridine-2-carboxylic acid compoundsFUJI PHOTO FILM CO LTD·Filed 1993·Granted Mar 22, 1994·1 cites·9 claims
- 4036US4910128ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1988·Granted Mar 20, 1990·2 cites·11 claims
- 4135US5521318ABenzotriazolylacetyl compoundFUJI PHOTO FILM CO LTD·Filed 1995·Granted May 28, 1996·1 cites·6 claims
- 4235US4289074AConstruction of truck for attractive type magnetically levitated vehicleJAPAN AIRLINES CO·Filed 1978·Granted Sep 15, 1981·3 cites·3 claims
- 4333US5734063A4-acylaminophenylacetylenealcohol compoundsFUJI PHOTO FILM CO LTD·Filed 1996·Granted Mar 31, 1998·0 cites·8 claims
- 4432US5693823AProcess for preparing 1,1-disubstituted-1H-benzo e!indole compound and hydroxyl-substituted compound thereofFUJI PHOTO FILM CO LTD·Filed 1997·Granted Dec 2, 1997·0 cites·14 claims
- 4531US5672714AMethod of manufacturing a 3-substituted-3-oxo-2-halopropionic acid amide compound and method of manufacturing a 3-substituted-3-oxo-2-(5,5-dimethylhydantoin-3-yl) propionic acid amide compoundFUJI PHOTO FILM CO LTD·Filed 1995·Granted Sep 30, 1997·0 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →