Inventor · disambiguated record
Hirotaka Fukuyama
Also filed as: FUKUYAMA HIROTAKA
17 granted patents·8 pending applications·220 citations·filing 1990–2020
94Inventor score
Top patents by PatentIndex Score
25 records- 0194US5488462AElectrophotographic apparatus having developing device with seals for preventing toner leakageTOSHIBA KK·Filed 1994·Granted Jan 30, 1996·52 cites·10 claims
- 0289US5412364AToner pack and development device for use in electrophotographic apparatusTOSHIBA KK·Filed 1993·Granted May 2, 1995·38 cites·35 claims
- 0385US5655178AElectrophotographic apparatus having cleaning device and developing device configured to prevent toner leakageTOSHIBA KK·Filed 1995·Granted Aug 5, 1997·35 cites·5 claims
- 0484US8121526B2Image forming device and image forming device control methodFUKUYAMA HIROTAKA·Filed 2010·Granted Feb 21, 2012·4 cites·9 claims
- 0576US7885589B2Image forming device and image forming device control methodTOSHIBA KK·Filed 2009·Granted Feb 8, 2011·3 cites·9 claims
- 0674US7570908B2Image forming device and image forming device control methodKABUHSIKI KAISHA TOSHIBA·Filed 2007·Granted Aug 4, 2009·3 cites·12 claims
- 0774US5692232AElectrophotographic apparatus that prevents toner from attaching to a contact member of a transfer deviceTOSHIBA KK·Filed 1996·Granted Nov 25, 1997·24 cites·12 claims
- 0868US6470164B1Image forming apparatus provided with a development device having a discharge port for a developing solutionTOSHIBA TEC KK·Filed 2001·Granted Oct 22, 2002·11 cites·3 claims
- 0964US6744995B2Electrophotographic image forming apparatusTOSHIBA KK·Filed 2002·Granted Jun 1, 2004·9 cites·7 claims
- 1063US2019041772A1Image forming apparatusTOSHIBA KK·Filed 2018·Application pending·0 cites
- 1161US5600417ADeveloping device for electrophotographic apparatusTOSHIBA KK·Filed 1993·Granted Feb 4, 1997·13 cites·16 claims
- 1261US5188057ADeveloping apparatusTOSHIBA KK·Filed 1990·Granted Feb 23, 1993·15 cites·18 claims
- 1360US11073773B1Image forming apparatus and control method thereofTOSHIBA TEC KK·Filed 2020·Granted Jul 27, 2021·0 cites·20 claims
- 1460US10126687B2Image forming apparatusTOSHIBA KK·Filed 2016·Granted Nov 13, 2018·0 cites·14 claims
- 1549US7962074B2Developing unit, image forming apparatus, and floating developer collecting method for developing unitTOSHIBA KK·Filed 2009·Granted Jun 14, 2011·0 cites·20 claims
- 1643US2020301315A1Developing device and image forming apparatusTOSHIBA TEC KK·Filed 2019·Application pending·0 cites
- 1742US2009232556A1Counting method of mixing time of developerTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1841US5557379AImage forming apparatus having a toner conveyance regulatorTOSHIBA KK·Filed 1994·Granted Sep 17, 1996·5 cites·20 claims
- 1938US5537192ATransfer roller and toner for electrophotographic apparatusTOSHIBA KK·Filed 1994·Granted Jul 16, 1996·4 cites·17 claims
- 2037US2011274452A1Image forming apparatus and photoconductive member cleaning method in the image forming apparatusTOSHIBA TEC KK·Filed 2011·Application pending·0 cites
- 2136US2011143272A1Image forming apparatus and image stabilization control method used in image forming apparatisTOSHIBA KK·Filed 2010·Application pending·0 cites
- 2235US2011064430A1Image forming method and determination method of contrast potentialTOSHIBA KK·Filed 2010·Application pending·0 cites
- 2335US2010266303A1Image forming apparatus and image forming methodTOSHIBA KK·Filed 2010·Application pending·0 cites
- 2433US2004033083A1Electrophotographic image forming device with mixer for mixing developer and method thereofTOSHIBA TEC KK·Filed 2002·Application pending·0 cites
- 2532US5278581APrinter for printing and image formed of 2-dimensionally arranged pixels, and method of printing the sameTOSHIBA KK·Filed 1991·Granted Jan 11, 1994·4 cites·25 claims
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