Inventor · disambiguated record
Tsukasa Ohyama
Also filed as: OHYAMA TSUKASA
15 granted patents·67 citations·filing 1988–1995
91Inventor score
Top patents by PatentIndex Score
15 records- 0175US5342974AHalogenated anthraquinone and their use as near infrared rays absorbing optical filtersMITSUI TOATSU CHEMICALS·Filed 1988·Granted Aug 30, 1994·13 cites·12 claims
- 0253US5358536ADyestuff for heat-sensitive transfer record and transfer sheet containing sameMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 25, 1994·6 cites·2 claims
- 0352US5567470AHeat-sensitive transfer sheet containing blue dyestuffMITSUI TOATSU CHEMICALS·Filed 1995·Granted Oct 22, 1996·4 cites·8 claims
- 0450US5359075AQuinophthalone compoundMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 25, 1994·4 cites·19 claims
- 0547US5045434AVisible radiation sensitive composition containing substituted 3-(benzothiazo-2-yl)-7-diethylaminocoumarin as sensitizersKANSAI PAINT CO LTD·Filed 1990·Granted Sep 3, 1991·12 cites·16 claims
- 0645US5168093ASublimation thermaltransfer printing sheet comprising novel magenta dyestuffsMITSUI TOATSU CHEMICALS·Filed 1990·Granted Dec 1, 1992·4 cites·9 claims
- 0745US4954410AColor toner compositionMITSUI TOATSU CHEMICALS·Filed 1989·Granted Sep 4, 1990·6 cites·15 claims
- 0842US5002925AIsopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, cyan composition for sublimation transfer record and cyan composition for color toner containing itMITSUI TOATSU CHEMICALS·Filed 1989·Granted Mar 26, 1991·2 cites·7 claims
- 0941US5248784A4-carbonyl-substituted coumarin compoundMITSUI TOATSU CHEMICALS·Filed 1992·Granted Sep 28, 1993·2 cites·7 claims
- 1038US5387686ADye for heat-sensitive transfer record and ink composition for heat-sensitive transfer recordMITSUI TOATSU CHEMICALS·Filed 1993·Granted Feb 7, 1995·5 cites·9 claims
- 1137US5300475ASublimation thermal transfer printing sheet comprising novel magenta dyestuffsMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 5, 1994·6 cites·3 claims
- 1232US5302573ATransfer sheet for sublimation recordingMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 12, 1994·3 cites·10 claims
- 1330US5296445ADye for heat-sensitive transfer record, ink composition for heat-sensitive transfer record, and transfer sheetMITSUI TOATSU CHEMICALS·Filed 1992·Granted Mar 22, 1994·0 cites·9 claims
- 1430US5182395AIsopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylateMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jan 26, 1993·0 cites·1 claims
- 1529US5183474AHeat-sensitive sublimation transfer cyan dye and transfer sheetMITSUI TOATSU CHEMICALS·Filed 1990·Granted Feb 2, 1993·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →