Inventor · disambiguated record
Hirofumi Hayata
Also filed as: HAYATA HIROFUMI
36 granted patents·5 pending applications·109 citations·filing 1990–2021
96Inventor score
Files withKONISHIROKU PHOTO IND17KONICA MINOLTA BUSINESS TECH9KONICA MINOLTA INC6FUJITA TOSHIYUKI4KURACHI MASAHIKO2
Top patents by PatentIndex Score
41 records- 0183US8771910B2Electrophotographic photoreceptorFUJITA TOSHIYUKI·Filed 2012·Granted Jul 8, 2014·3 cites·19 claims
- 0281US7402366B2Organic photoreceptor, process cartridge, image forming method, and image forming apparatusKONICA MINOLTA BUSINESS TECH·Filed 2006·Granted Jul 22, 2008·6 cites·14 claims
- 0380US6514651B1Metal phthalocyanine crystal particles, production method thereof, and electrophotographic photoreceptor as well as electrophotographic process using the sameKONISHIROKU PHOTO IND·Filed 2000·Granted Feb 4, 2003·12 cites·10 claims
- 0475US6399263B1Electrophotographic photoreceptor, electrophotographic process, and electrophotographic image forming methodKONISHIROKU PHOTO IND·Filed 2000·Granted Jun 4, 2002·12 cites·7 claims
- 0574US8557486B2Organic photoreceptor, manufacturing method of organic photoreceptor, and image forming apparatusISHIDA TAKESHI·Filed 2009·Granted Oct 15, 2013·4 cites·8 claims
- 0672US9436108B2Electrophotographic photoreceptorKONICA MINOLTA INC·Filed 2015·Granted Sep 6, 2016·1 cites·11 claims
- 0771US8404417B2Organic photoreceptor, image forming apparatus and process cartridgeFUJITA TOSHIYUKI·Filed 2009·Granted Mar 26, 2013·3 cites·13 claims
- 0864US11976230B2Photoresponsive material, adhesive, optical switching material, toner, and image forming methodKONICA MINOLTA INC·Filed 2021·Granted May 7, 2024·0 cites·14 claims
- 0961US5942359AElectrophotoreceptorKONISHIROKU PHOTO IND·Filed 1997·Granted Aug 24, 1999·14 cites·13 claims
- 1057US9958796B2Electrophotographic photoreceptor, image forming method, and image forming apparatusKONICA MINOLTA INC·Filed 2017·Granted May 1, 2018·0 cites·10 claims
- 1157US8084172B2Organic photoreceptor, image forming apparatus, process cartridge, and color image forming apparatusKURACHI MASAHIKO·Filed 2009·Granted Dec 27, 2011·1 cites·11 claims
- 1254US6544703B2Electrophotographic photoreceptor, electrophotographic process, and electrophotographic image forming methodKONISHIROKU PHOTO IND·Filed 2002·Granted Apr 8, 2003·4 cites·9 claims
- 1351US8354212B2Electrophotographic photoreceptor, image forming apparatus, and method for image formationKONICA MINOLTA BUSINESS TECH·Filed 2009·Granted Jan 15, 2013·0 cites·6 claims
- 1450US11702398B2Photoresponsive low-molecular weight material, adhesive, toner, and image forming methodKONICA MINOLTA INC·Filed 2020·Granted Jul 18, 2023·0 cites·10 claims
- 1550US8318396B2Organic photoreceptor and preparation method thereofFUJITA TOSHIYUKI·Filed 2010·Granted Nov 27, 2012·0 cites·16 claims
- 1650US7977021B2Electrophotographic toner, and image forming method and image forming apparatus employing the sameKONICA MINOLTA BUSINESS TECH·Filed 2008·Granted Jul 12, 2011·0 cites·11 claims
- 1750US6268097B1Electrophotographic photoreceptorKONISHIROKU PHOTO IND·Filed 1999·Granted Jul 31, 2001·8 cites·13 claims
- 1849US8481233B2Organic photoreceptor, image forming apparatus and process cartridgeFUJITA TOSHIYUKI·Filed 2008·Granted Jul 9, 2013·0 cites·13 claims
- 1948US5079119APhotoreceptorKONISHIROKU PHOTO IND·Filed 1990·Granted Jan 7, 1992·7 cites·12 claims
- 2047US5718997AElectrophotographic photoreceptorKONISHIROKU PHOTO IND·Filed 1996·Granted Feb 17, 1998·8 cites·10 claims
- 2147US5589314AImage forming method using an imidazole-perylene electrophotographic photoreceptorKONISHIROKU PHOTO IND·Filed 1995·Granted Dec 31, 1996·8 cites·6 claims
- 2246US8202675B2Electrophotographic photoreceptor, image forming apparatus, and process cartridgeKURACHI MASAHIKO·Filed 2010·Granted Jun 19, 2012·0 cites·23 claims
- 2344US2019202194A1Original plate for forming ink film, pattern forming method, pattern film forming method, and pattern film forming apparatusKONICA MINOLTA INC·Filed 2018·Application pending·0 cites
- 2443US9964870B2Electrophotographic photoreceptor and image forming apparatus and image forming method using the sameKONICA MINOLTA INC·Filed 2017·Granted May 8, 2018·0 cites·5 claims
- 2543US8163456B2Image forming method and image forming apparatusHAYATA HIROFUMI·Filed 2009·Granted Apr 24, 2012·0 cites·12 claims
- 2643US2010150610A1Electrophotographic photoreceptor and image forming apparatusKONICA MINOLTA BUSINESS TECH·Filed 2009·Application pending·0 cites
- 2743US2010086328A1Organic photoreceptor, manufacturing method of organic photoreceptor, image forming apparatus and process cartridgeKONICA MINOLTA BUSINESS TECH·Filed 2009·Application pending·0 cites
- 2841US5849444AElectrophotographic photoreceptor with aliphatic amine containing electron transporting layerKONISHIROKU PHOTO IND·Filed 1997·Granted Dec 15, 1998·5 cites·6 claims
- 2940US7473510B2Electrophotographic photoreceptor, a processing cartridge, an image forming apparatus and an image forming methodKONICA MINOLTA BUSINESS TECH·Filed 2004·Granted Jan 6, 2009·1 cites·15 claims
- 3040US6620567B2Electrophotographic photoreceptor, image forming apparatus and processing cartridgeKONISHIROKU PHOTO IND·Filed 2002·Granted Sep 16, 2003·2 cites·14 claims
- 3139US5077163AElectrophotographic photoreceptorKONISHIROKU PHOTO IND·Filed 1990·Granted Dec 31, 1991·4 cites·15 claims
- 3239US2008063960A1Electrophotographic photoreceptorKONICA MINOLTA BUSINESS TECH·Filed 2007·Application pending·0 cites
- 3338US2011217651A1Image formation method and image formation apparatusKONICA MINOLTA BUSINESS TECH·Filed 2011·Application pending·0 cites
- 3436US7358020B2Image forming apparatus and image forming methodKONICA MINOLTA BUSINESS TECH·Filed 2004·Granted Apr 15, 2008·0 cites·20 claims
- 3536US6878496B2Electrophotoreceptor, image forming method, image forming apparatus and processing cartridgeKONISHIROKU PHOTO IND·Filed 2002·Granted Apr 12, 2005·0 cites·26 claims
- 3636US6027845AElectrophotography photosensitive elementKONISHIROKU PHOTO IND·Filed 1997·Granted Feb 22, 2000·3 cites·2 claims
- 3734US8071266B2Electrophotographic photoreceptor, and process cartridge and image forming apparatus employing the sameOGURA KUNIHIRO·Filed 2007·Granted Dec 6, 2011·0 cites·8 claims
- 3833US5589309AElectrophotographic photoreceptor containing perylenesKONISHIROKU PHOTO IND·Filed 1995·Granted Dec 31, 1996·2 cites·3 claims
- 3931US5166022AElectrophotographic photoreceptorKONISHIROKU PHOTO IND·Filed 1990·Granted Nov 24, 1992·1 cites·5 claims
- 4030US5080990AElectrophotographic photoreceptor having charge transport materialKONISHIROKU PHOTO IND·Filed 1990·Granted Jan 14, 1992·0 cites·3 claims
- 4125US5270140ABisstyryl compound and the electrophotographic photoreceptors relating theretoKONISHIROKU PHOTO IND·Filed 1992·Granted Dec 14, 1993·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →