Inventor · disambiguated record
Tahei Ishiwatari
Also filed as: ISHIWATARI TAHEI
26 granted patents·383 citations·filing 1988–2004
97Inventor score
Files withSEIKO EPSON CORP26
Top patents by PatentIndex Score
26 records- 0191US6185380B1Image forming apparatus having independent recording media discharge passagesSEIKO EPSON CORP·Filed 2000·Granted Feb 6, 2001·29 cites·8 claims
- 0286US6459877B1Fixing device which prevents damage to a fixing beltSEIKO EPSON CORP·Filed 2000·Granted Oct 1, 2002·23 cites·35 claims
- 0385US6336022B2Developing unitSEIKO EPSON CORP·Filed 2001·Granted Jan 1, 2002·15 cites·1 claims
- 0485US5701554AFixing apparatus having controller for setting a target temperature and for estimating the amount of heat transferred to a pressure rollerSEIKO EPSON CORP·Filed 1995·Granted Dec 23, 1997·40 cites·33 claims
- 0583US5950052AImage forming apparatusSEIKO EPSON CORP·Filed 1997·Granted Sep 7, 1999·34 cites·42 claims
- 0682US6163674ADeveloping unit having developing roller with restraining bladeSEIKO EPSON CORP·Filed 1999·Granted Dec 19, 2000·18 cites·3 claims
- 0779US6198893B1Image forming apparatus having a plurality of developing unitsSEIKO EPSON CORP·Filed 1999·Granted Mar 6, 2001·16 cites·3 claims
- 0879US6192209B1Developing unitSEIKO EPSON CORP·Filed 1999·Granted Feb 20, 2001·16 cites·4 claims
- 0976US6408158B1Intermediate transfer unitSEIKO EPSON CORP·Filed 2000·Granted Jun 18, 2002·11 cites·1 claims
- 1076US6233424B1Image receiving sheet having particular critical surface tension, viscoelastic, and rockwell hardness characteristics and image receiving apparatus using the sameSEIKO EPSON CORP·Filed 1999·Granted May 15, 2001·23 cites·50 claims
- 1175US6731899B2Intermediate transfer unitSEIKO EPSON CORP·Filed 2002·Granted May 4, 2004·10 cites·13 claims
- 1274US6078760AImage forming apparatus having an inverse and re-fixing sub-modeSEIKO EPSON CORP·Filed 1998·Granted Jun 20, 2000·20 cites·26 claims
- 1373US6312788B1Image receiving sheet and image receiving apparatus using the sameSEIKO EPSON CORP·Filed 1997·Granted Nov 6, 2001·22 cites·24 claims
- 1473US6226484B1Developing unit using specific developer compositionSEIKO EPSON CORP·Filed 1999·Granted May 1, 2001·12 cites·3 claims
- 1573US4948692ACombination toner and printer utilizing sameSEIKO EPSON CORP·Filed 1988·Granted Aug 14, 1990·18 cites·19 claims
- 1671US6094554ADeveloping unit having developing roller with specific side surface roughnessSEIKO EPSON CORP·Filed 1999·Granted Jul 25, 2000·11 cites·1 claims
- 1770US6151474ADeveloping unit using elastic supply rollerSEIKO EPSON CORP·Filed 1999·Granted Nov 21, 2000·11 cites·2 claims
- 1867US7187893B2Image 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
- 1964US6792236B2Fixing device for an image forming apparatusSEIKO EPSON CORP·Filed 2002·Granted Sep 14, 2004·7 cites·41 claims
- 2061US6223015B1Recording medium carrier system intermediate transfer unitSEIKO EPSON CORP·Filed 1998·Granted Apr 24, 2001·12 cites·9 claims
- 2159US6295433B1Developing unit having a conveying fin for loading a supply roller with tonerSEIKO EPSON CORP·Filed 1999·Granted Sep 25, 2001·7 cites·2 claims
- 2257US6856782B2Intermediate transfer unit having a primary and a secondary transfer memberSEIKO EPSON CORP·Filed 2002·Granted Feb 15, 2005·6 cites·2 claims
- 2356US6173139B1Recording 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
- 2447US7018766B2Toner and production process thereofSEIKO EPSON CORP·Filed 2003·Granted Mar 28, 2006·3 cites·3 claims
- 2547US6957032B2Intermediate transfer unit having a primary transfer member and a secondary transfer rollerSEIKO EPSON CORP·Filed 2002·Granted Oct 18, 2005·2 cites·9 claims
- 2636US7105262B2Liquid developerSEIKO EPSON CORP·Filed 2004·Granted Sep 12, 2006·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →