Inventor · disambiguated record
Takehiko Okamura
Also filed as: OKAMURA TAKEHIKO
28 granted patents·301 citations·filing 1991–2008
97Inventor score
Top patents by PatentIndex Score
28 records- 0191US5655197ADeveloping deviceSEIKO EPSON CORP·Filed 1995·Granted Aug 5, 1997·47 cites·30 claims
- 0287US7809287B2Consumable cartridge and image forming apparatus using the sameSEIKO EPSON CORP·Filed 2008·Granted Oct 5, 2010·8 cites·9 claims
- 0387US5557060ADeveloping deviceSEIKO EPSON CORP·Filed 1993·Granted Sep 17, 1996·30 cites·6 claims
- 0484US6035154AImage forming apparatusSEIKO EPSON CORP·Filed 1998·Granted Mar 7, 2000·37 cites·12 claims
- 0577US7289743B2Image forming apparatus, a toner counter and a calculation method of toner consumptionSEIKO EPSON CORP·Filed 2005·Granted Oct 30, 2007·4 cites·11 claims
- 0676US6941100B2Developer bearing member, method for producing developer bearing member, developing device, image-forming apparatus, and computer systemSEIKO EPSON CORP·Filed 2003·Granted Sep 6, 2005·15 cites·72 claims
- 0776US6408158B1Intermediate transfer unitSEIKO EPSON CORP·Filed 2000·Granted Jun 18, 2002·11 cites·1 claims
- 0875US6731899B2Intermediate transfer unitSEIKO EPSON CORP·Filed 2002·Granted May 4, 2004·10 cites·13 claims
- 0971US7113711B2Device and method of managing life of toner cartridge, and image forming apparatus using the sameSEIKO EPSON CORP·Filed 2004·Granted Sep 26, 2006·11 cites·16 claims
- 1068US7509064B2Image forming apparatus, a toner counter and a calculation method of toner consumptionSEIKO EPSON CORP·Filed 2007·Granted Mar 24, 2009·2 cites·11 claims
- 1167US7187893B2Image transfer unit having an intermediate transfer belt to which a toner image is appliedSEIKO EPSON CORP·Filed 2002·Granted Mar 6, 2007·7 cites·6 claims
- 1266US5149914ADevelopment apparatus using a flexible magnetic field forming layerSEIKO EPSON CORP·Filed 1991·Granted Sep 22, 1992·17 cites·47 claims
- 1361US6223015B1Recording medium carrier system intermediate transfer unitSEIKO EPSON CORP·Filed 1998·Granted Apr 24, 2001·12 cites·9 claims
- 1459USD500075SToner cartridgeSEIKO EPSON CORP·Filed 2003·Granted Dec 21, 2004·10 cites·1 claims
- 1559US6507722B2Developing deviceSEIKO EPSON CORP·Filed 2001·Granted Jan 14, 2003·7 cites·11 claims
- 1657US6856782B2Intermediate transfer unit having a primary and a secondary transfer memberSEIKO EPSON CORP·Filed 2002·Granted Feb 15, 2005·6 cites·2 claims
- 1756US6173139B1Recording medium carrier system having a paper feed unit, a transfer unit, a fixing unit and a paper ejecting unit constructed as independent unitsSEIKO EPSON CORP·Filed 1998·Granted Jan 9, 2001·10 cites·4 claims
- 1855US6999707B2Method of forming image and image forming apparatusSEIKO EPSON CORP·Filed 2004·Granted Feb 14, 2006·5 cites·8 claims
- 1954US7773889B2Image forming apparatus and method of setting the sameSEIKO EPSON CORP·Filed 2008·Granted Aug 10, 2010·2 cites·4 claims
- 2050US7489882B2Image forming apparatus, a toner counter and a calculation method of toner consumptionSEIKO EPSON CORP·Filed 2007·Granted Feb 10, 2009·0 cites·17 claims
- 2150US6258495B1Process for aligning work and maskORC MFG CO LTD·Filed 1999·Granted Jul 10, 2001·16 cites·5 claims
- 2249US5606172AExposing apparatus and exposing method of worksORC MFG CO LTD·Filed 1995·Granted Feb 25, 1997·12 cites·14 claims
- 2347US6957032B2Intermediate transfer unit having a primary transfer member and a secondary transfer rollerSEIKO EPSON CORP·Filed 2002·Granted Oct 18, 2005·2 cites·9 claims
- 2444US5453819ACharger apparatusSEIKO EPSON CORP·Filed 1994·Granted Sep 26, 1995·6 cites·31 claims
- 2543US6526238B2Developing deviceSEIKO EPSON CORP·Filed 2001·Granted Feb 25, 2003·2 cites·16 claims
- 2643US6281963B1Image forming apparatusSEIKO EPSON CORP·Filed 1999·Granted Aug 28, 2001·6 cites·21 claims
- 2737US7158744B2Developing device, image forming apparatus, and image forming systemSEIKO EPSON CORP·Filed 2004·Granted Jan 2, 2007·0 cites·25 claims
- 2832US5390025AMethod of locating work in automatic exposing apparatusORC MFG CO LTD·Filed 1992·Granted Feb 14, 1995·6 cites·5 claims
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