Inventor · disambiguated record
Yukimasa Watanabe
Also filed as: WATANABE YUKIMASA
22 granted patents·3 pending applications·211 citations·filing 1995–2025
95Inventor score
Files withKYOCERA MITA CORP11KYOCERA DOCUMENT SOLUTIONS INC7MITA INDUSTRIAL CO LTD6HAMASAKI KAZUNARI1
Top patents by PatentIndex Score
25 records- 0189US9158227B1Developing roller and developing apparatus and image forming apparatus using the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Oct 13, 2015·4 cites·7 claims
- 0286US6022998AStilbene derivative and method for producing the sameMITA INDUSTRIAL CO LTD·Filed 1998·Granted Feb 8, 2000·37 cites·30 claims
- 0383US6391505B1Phthalocyanine crystal and its production, and electrophotosensitive material using the sameKYOCERA MITA CORP·Filed 2000·Granted May 21, 2002·24 cites·24 claims
- 0482US6528645B1Titanyl phthalocyanine crystal and production method of the same, and electrophotosensitive material and production method of the sameKYOCERA MITA CORP·Filed 2000·Granted Mar 4, 2003·15 cites·14 claims
- 0581US5994012ANaphthoquinone derivative and electrophotosensitive material using sameMITA INDUSTRIAL CO LTD·Filed 1997·Granted Nov 30, 1999·19 cites·20 claims
- 0681US5863688ANaphthoquinone derivativeMITA INDUSTRIAL CO LTD·Filed 1996·Granted Jan 26, 1999·26 cites·21 claims
- 0778US6593047B2Single-layer type electrophotosensitive materialKYOCERA MITA CORP·Filed 2001·Granted Jul 15, 2003·18 cites·15 claims
- 0878US6177220B1Stilbene derivative and method of producing the same, and electrophotosensitive materialKYOCERA MITA CORP·Filed 1999·Granted Jan 23, 2001·17 cites·13 claims
- 0969US2025258450A1Magnet roller, manufacturing method for a magnet roller, and developing apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 1066US9158264B2Electrophotographic photosensitive member and image forming apparatus including electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2013·Granted Oct 13, 2015·1 cites·8 claims
- 1166US6338927B1Stilbene derivative, method of producing the same, and electrophotosensitive material using the sameKYOCERA MITA CORP·Filed 2000·Granted Jan 15, 2002·9 cites·19 claims
- 1265US2025271791A1Magnet roller, developing roller, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 1362US9213229B2Positively chargeable electrophotographic photosensitive member and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted Dec 15, 2015·1 cites·11 claims
- 1456US6573017B2Single-layer type electrophotosensitive materialKYOCERA MITA CORP·Filed 2001·Granted Jun 3, 2003·6 cites·8 claims
- 1553US6858368B2Electrophotographic photoreceptor and image forming deviceKYOCERA MITA CORP·Filed 2003·Granted Feb 22, 2005·5 cites·11 claims
- 1653US5773613ATryptoanthrinimine derivative and electrophotosensitive material using the sameMITA INDUSTRIAL CO LTD·Filed 1995·Granted Jun 30, 1998·11 cites·7 claims
- 1748US6879794B2Image forming apparatusKYOCERA MITA CORP·Filed 2002·Granted Apr 12, 2005·4 cites·11 claims
- 1848US5817810ATryptanthrine compoundsMITA INDUSTRIAL CO LTD·Filed 1996·Granted Oct 6, 1998·4 cites·3 claims
- 1946US6461779B1Single-layer type electrophotosensitive materialKYOCERA MITA CORP·Filed 2001·Granted Oct 8, 2002·3 cites·10 claims
- 2044US9298126B2Developing device and image forming apparatus including the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Mar 29, 2016·0 cites·6 claims
- 2142US9285713B2Developing device, and image forming apparatus provided with the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Mar 15, 2016·0 cites·10 claims
- 2239US7090952B2Electrophotosensitive materialKYOCERA MITA CORP·Filed 2003·Granted Aug 15, 2006·1 cites·4 claims
- 2338US6015646AElectrophotosensitive material and image forming method using the sameMITA INDUSTRIAL CO LTD·Filed 1998·Granted Jan 18, 2000·6 cites·10 claims
- 2437US2008187368A1Drum unit and image forming apparatus equipped therewithKYOCERA MITA CORP·Filed 2008·Application pending·0 cites
- 2534US8642236B2Electro photographic photoconductor and color image forming apparatusHAMASAKI KAZUNARI·Filed 2008·Granted Feb 4, 2014·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →