Inventor · disambiguated record
Fumio Sugai
Also filed as: SUGAI FUMIO
26 granted patents·137 citations·filing 1994–2017
94Inventor score
Top patents by PatentIndex Score
26 records- 0182US9436105B2Triarylamine derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Sep 6, 2016·2 cites·5 claims
- 0281US5994012ANaphthoquinone derivative and electrophotosensitive material using sameMITA INDUSTRIAL CO LTD·Filed 1997·Granted Nov 30, 1999·19 cites·20 claims
- 0381US5863688ANaphthoquinone derivativeMITA INDUSTRIAL CO LTD·Filed 1996·Granted Jan 26, 1999·26 cites·21 claims
- 0478US6127076ANaphthalenetetracarboxylic acid diimide derivatives and photosensitive material for electrophotographyKYOCERA MITA CORP·Filed 1999·Granted Oct 3, 2000·26 cites·17 claims
- 0571US9690217B2Triarylamine derivative, electrophotographic photosensitive member, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jun 27, 2017·1 cites·8 claims
- 0668US6346355B2Electrophotosensitive materialKYOCERA MITA CORP·Filed 2001·Granted Feb 12, 2002·10 cites·4 claims
- 0762US6174638B1Naphthalenetetracarboxylic acid diimide derivatives and photosensitive materials for electrophotographyKYOCERA MITA CORP·Filed 1999·Granted Jan 16, 2001·16 cites·21 claims
- 0860US10126667B2Quinone derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2017·Granted Nov 13, 2018·0 cites·5 claims
- 0954US9964869B2Triarylamine derivative, electrophotographic photosensitive member, and method for producing electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2016·Granted May 8, 2018·0 cites·11 claims
- 1054US9581921B2Electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Feb 28, 2017·0 cites·4 claims
- 1154US9454091B2Hydrazone derivative of triphenylamine and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Sep 27, 2016·0 cites·7 claims
- 1254US6395439B1Naphthoquinone derivative and electrophotosensitive material using the sameKYOCERA MITA CORP·Filed 2000·Granted May 28, 2002·1 cites·7 claims
- 1354US5976742ANaphthoquinone derivative and electrophotographic material using the naphthoquinone derivativeMITA INDUSTRIAL CO LTD·Filed 1998·Granted Nov 2, 1999·11 cites·3 claims
- 1453US9376371B2Triphenylamine derivative, method for manufacturing the same, and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted Jun 28, 2016·0 cites·9 claims
- 1553US5773613ATryptoanthrinimine derivative and electrophotosensitive material using the sameMITA INDUSTRIAL CO LTD·Filed 1995·Granted Jun 30, 1998·11 cites·7 claims
- 1649US5468874ABenzothiophene/indole-substituted maleimide derivatives, photochromic material comprising said derivatives and optical recording material using the same materialMITA INDUSTRIAL CO LTD·Filed 1994·Granted Nov 21, 1995·3 cites·9 claims
- 1748US5817810ATryptanthrine compoundsMITA INDUSTRIAL CO LTD·Filed 1996·Granted Oct 6, 1998·4 cites·3 claims
- 1847US9447022B2Triarylamine derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Sep 20, 2016·0 cites·12 claims
- 1946US9684253B2Triphenylamine derivative, electrophotographic photosensitive member, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jun 20, 2017·0 cites·11 claims
- 2044US9783491B2Quinone derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Oct 10, 2017·0 cites·5 claims
- 2143US9494881B2Triarylamine derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Nov 15, 2016·0 cites·12 claims
- 2242US6500592B2Electrophotosensitive materialKYOCERA MITA CORP·Filed 2001·Granted Dec 31, 2002·2 cites·7 claims
- 2340US9783493B2Quinone derivative and electrophotographic photosensitive memberKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Oct 10, 2017·0 cites·5 claims
- 2440US5977389ANaphthoquinone derivativeMITA INDUSTRIAL CO LTD·Filed 1998·Granted Nov 2, 1999·5 cites·5 claims
- 2535US7468230B2Wet-developing electrophotographic photoconductor and wet-developing imageKYOCERA MITA CORP·Filed 2004·Granted Dec 23, 2008·0 cites·11 claims
- 2635US6376142B2Electrophotosensitive material containing specific maleimide derivativeKYOCERA MITA CORP·Filed 2001·Granted Apr 23, 2002·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →