Inventor · disambiguated record
Atsuo Tokunaga
Also filed as: TOKUNAGA ATSUO
12 granted patents·3 pending applications·154 citations·filing 1995–2025
91Inventor score
Top patents by PatentIndex Score
15 records- 0190US5970282AMethod of cleaning a surface in an image forming apparatus by feeding toner to the surfaceRICOH KK·Filed 1998·Granted Oct 19, 1999·44 cites·41 claims
- 0290US5881339AImage forming apparatus having a cleaning blade for removing deposited tonerRICOH KK·Filed 1997·Granted Mar 9, 1999·44 cites·46 claims
- 0387US8366262B2Sheet feeder and image forming apparatus including sameRICOH CO LTD·Filed 2010·Granted Feb 5, 2013·5 cites·8 claims
- 0484US8322644B2Roll-sheet feeding device and image forming apparatusNAKADA KIKUYA·Filed 2010·Granted Dec 4, 2012·7 cites·15 claims
- 0569US7720406B2Optical device and image forming apparatusRICOH KK·Filed 2007·Granted May 18, 2010·3 cites·13 claims
- 0666US6911800B2Stepping motor controller, scanning apparatus, and image forming apparatusRICOH KK·Filed 2003·Granted Jun 28, 2005·12 cites·12 claims
- 0757US7893394B2Optical device, image reading device, and filter manufacturing methodRICOH CO LTD·Filed 2008·Granted Feb 22, 2011·2 cites·5 claims
- 0857US7168652B2Rolled paper conveying apparatusRICOH KK·Filed 2003·Granted Jan 30, 2007·5 cites·12 claims
- 0953US6825862B2Image formation apparatus, image formation method, and computer productRICOH KK·Filed 2003·Granted Nov 30, 2004·5 cites·24 claims
- 1049US6867891B2Optical scanning device and image forming apparatus including the sameRICOH KK·Filed 2002·Granted Mar 15, 2005·2 cites·12 claims
- 1148US6072703APower supplying apparatus and method for an electrophotographic apparatusRICOH KK·Filed 1998·Granted Jun 6, 2000·9 cites·34 claims
- 1248US5673187APower supply systemRICOH KK·Filed 1995·Granted Sep 30, 1997·16 cites·8 claims
- 1347US2025247490A1Reading Device, Reading Method, And Non-Transitory Recording MediumISHII TATSUYA·Filed 2025·Application pending·0 cites
- 1446US2008002104A1Optical device, image scanning apparatus, and image forming apparatusTOKUNAGA ATSUO·Filed 2007·Application pending·0 cites
- 1537US2002131136A1Method and apparatus for image forming with dual optical scanning systemsFiled 2002·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Atsuo Tokunaga files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →