Inventor · disambiguated record
Masashi Yasumatsu
Also filed as: YASUMATSU MASASHI
15 granted patents·4 pending applications·107 citations·filing 1996–2014
92Inventor score
Files withORIENT CHEMICAL IND13KURODA KAZUYOSHI3ORIENT CHEMICAL INSUSTRIES LTD1Orient chemical ind co ltd1YASUMATSU MASASHI1
Top patents by PatentIndex Score
19 records- 0183US9079989B2Charge control resin and manufacturing method of the sameOrient chemical ind co ltd·Filed 2014·Granted Jul 14, 2015·5 cites·17 claims
- 0282US8883946B2Charge control resin and manufacturing method of the sameYASUMATSU MASASHI·Filed 2012·Granted Nov 11, 2014·7 cites·9 claims
- 0375US6548648B1Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic imagesORIENT CHEMICAL IND·Filed 2000·Granted Apr 15, 2003·9 cites·8 claims
- 0471US5976749AMetal compound of aromatic hydroxycarboxylic acid, charge control agent, toner, and powdery paintORIENT CHEMICAL IND·Filed 1996·Granted Nov 2, 1999·18 cites·16 claims
- 0568US6197467B1Charge control agent, manufacturing process therefor and tonerORIENT CHEMICAL IND·Filed 1998·Granted Mar 6, 2001·20 cites·36 claims
- 0665US5990332AMetal compound of aromatic hydroxycarboxylic acid, charge control agent, toner, and powdery paintORIENT CHEMICAL IND·Filed 1998·Granted Nov 23, 1999·14 cites·7 claims
- 0760US7094513B2Charge control agent and toner for electrostatic image developmentORIENT CHEMICAL IND·Filed 2003·Granted Aug 22, 2006·7 cites·11 claims
- 0860US5843611AMonoazo metal compound, composition thereof, charge control agent, toner and powdery paintORIENT CHEMICAL IND·Filed 1996·Granted Dec 1, 1998·13 cites·11 claims
- 0951US6756485B2Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic imagesORIENT CHEMICAL IND·Filed 2003·Granted Jun 29, 2004·4 cites·38 claims
- 1043US7879520B2Toner for developing electrostatic image and image formation process using itORIENT CHEMICAL IND·Filed 2007·Granted Feb 1, 2011·0 cites·14 claims
- 1143US7479360B2Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the tonerORIENT CHEMICAL IND·Filed 2003·Granted Jan 20, 2009·3 cites·27 claims
- 1243US2006257776A1Charge control agent and toner for electrostatic image developmentORIENT CHEMICAL IND·Filed 2006·Application pending·0 cites
- 1342US7875412B2Positive electrified charge control agent and positive electrified toner for developing electrostatic imageORIENT CHEMICAL IND·Filed 2007·Granted Jan 25, 2011·0 cites·14 claims
- 1442US2009053641A1Charge control agent and related artKURODA KAZUYOSHI·Filed 2006·Application pending·0 cites
- 1540US7413837B2Charge control agent and toner for electrostatic image development containing the sameORIENT CHEMICAL IND·Filed 2003·Granted Aug 19, 2008·3 cites·4 claims
- 1637US2007037083A1Positive electrified charge control agent and charge control method of toner using itORIENT CHEMICAL INSUSTRIES LTD·Filed 2006·Application pending·0 cites
- 1736US8076465B2Method for manufacturing charge control agentKURODA KAZUYOSHI·Filed 2004·Granted Dec 13, 2011·2 cites·8 claims
- 1833US2011045397A1Charge control agent and related artKURODA KAZUYOSHI·Filed 2010·Application pending·0 cites
- 1931US6153735AMonoazo metal compound, composition thereof, charge control agent, toner and powdery paintORIENT CHEMICAL IND·Filed 1998·Granted Nov 28, 2000·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →