Inventor · disambiguated record
Hiroyasu Shijo
Also filed as: SHIJO HIROYASU
22 granted patents·441 citations·filing 1992–2009
96Inventor score
Top patents by PatentIndex Score
22 records- 0197US6898407B2Desktop color image forming apparatus and method of making the sameRICOH KK·Filed 2003·Granted May 24, 2005·61 cites·56 claims
- 0295US7263309B2Desktop color image forming apparatus and method of making the sameRICOH KK·Filed 2005·Granted Aug 28, 2007·15 cites·26 claims
- 0395US5383754AImage forming apparatus having an image orientation identifying device and a binding deviceRICOH KK·Filed 1993·Granted Jan 24, 1995·158 cites·18 claims
- 0494US6567643B2Apparatuses for color image formation, tandem color image formation and image formationRICOH KK·Filed 2001·Granted May 20, 2003·38 cites·7 claims
- 0593US7333749B2Desktop color image forming apparatus and method of making the sameRICOH KK·Filed 2007·Granted Feb 19, 2008·10 cites·32 claims
- 0688US6973283B2Color image forming apparatus, and toner replenishing apparatusRICOH KK·Filed 2001·Granted Dec 6, 2005·20 cites·21 claims
- 0788US6829465B2Method and apparatus for image forming capable of effectively performing color displacement detectionRICOH KK·Filed 2002·Granted Dec 7, 2004·38 cites·47 claims
- 0879US7551867B2Image forming apparatus including controller driving image carriersRICOH KK·Filed 2008·Granted Jun 23, 2009·4 cites·6 claims
- 0979US6801749B2Apparatuses for color image formation, tandem color image formation and image formationRICOH KK·Filed 2003·Granted Oct 5, 2004·12 cites·20 claims
- 1078US7406283B2Desktop color image forming apparatus and method of making the sameRICOH KK·Filed 2007·Granted Jul 29, 2008·3 cites·9 claims
- 1177US7606521B2Desktop color image forming apparatus and method of making the sameRICOH KK·Filed 2008·Granted Oct 20, 2009·3 cites·19 claims
- 1276US6934498B2Color image forming apparatus, tandem type color image forming apparatus, and process cartridge for color image forming apparatusRICOH KK·Filed 2003·Granted Aug 23, 2005·15 cites·19 claims
- 1372US7436417B2Color image forming apparatus, and toner replenishing apparatusRICOH KK·Filed 2006·Granted Oct 14, 2008·2 cites·21 claims
- 1472US7136600B2Image forming apparatus including controller driving image carriersRICOH KK·Filed 2003·Granted Nov 14, 2006·10 cites·12 claims
- 1569US7212764B2Color image forming apparatus, and toner replenishing apparatusRICOH KK·Filed 2004·Granted May 1, 2007·7 cites·40 claims
- 1669US5414535AApparatus for reading image from original image on translucent film with automatic adjustment of the quantity of light from a light sourceRICOH KK·Filed 1992·Granted May 9, 1995·34 cites·6 claims
- 1767US7386259B2Image forming apparatus including controller driving image carriersRICOH KK·Filed 2006·Granted Jun 10, 2008·2 cites·12 claims
- 1861US6785504B2Apparatuses for color image formation, tandem color image formation and image formationRICOH KK·Filed 2003·Granted Aug 31, 2004·5 cites·5 claims
- 1957US6766137B2Apparatuses for color image formation, tandem color image formation and image formationRICOH KK·Filed 2003·Granted Jul 20, 2004·4 cites·6 claims
- 2052US7894744B2Color image forming apparatus, and toner replenishing apparatusRICOH CO LTD·Filed 2008·Granted Feb 22, 2011·0 cites·9 claims
- 2150US7457561B2Color image forming apparatus, and toner replenishing apparatusRICOH KK·Filed 2007·Granted Nov 25, 2008·0 cites·27 claims
- 2249US7787787B2Image forming apparatus including controller driving image carriersRICOH KK·Filed 2009·Granted Aug 31, 2010·0 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Hiroyasu Shijo 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 →