Inventor · disambiguated record
Koichi Sumioka
Also filed as: SUMIOKA KOICHI
6 granted patents·30 citations·filing 1989–2013
77Inventor score
Top patents by PatentIndex Score
6 records- 0177US6607269B2Ink-jet recording materialMITSUBISHI PAPER MILLS LTD·Filed 2001·Granted Aug 19, 2003·11 cites·45 claims
- 0276US4904578ALight absorbing dye for photographyMITSUBISHI PAPER MILLS LTD·Filed 1989·Granted Feb 27, 1990·13 cites·4 claims
- 0369US8973496B2Screen printing machineYAMAHA MOTOR CO LTD·Filed 2013·Granted Mar 10, 2015·3 cites·9 claims
- 0460US6821585B2Ink-jet recording material and ink for ink-jet recordingMITSUBISHI PAPER MILLS LTD·Filed 2002·Granted Nov 23, 2004·3 cites·13 claims
- 0551US8383831B2Dye for dye-sensitized solar cell, semiconductor electrode, and dye-sensitized solar cellMITSUBISHI PAPER MILLS LTD·Filed 2009·Granted Feb 26, 2013·0 cites·3 claims
- 0641US9073302B2Screen printing machineYAMAHA MOTOR CO LTD·Filed 2013·Granted Jul 7, 2015·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →