Inventor · disambiguated record
Hirobumi Ouchi
Also filed as: MUKAI TOJI · OUCHI HIROBUMI
13 granted patents·2 pending applications·191 citations·filing 1979–2009
92Inventor score
Top patents by PatentIndex Score
15 records- 0185US5245491AMagneto-optical head employing optical fiber connected stationary and movable portionsHITACHI CABLE·Filed 1990·Granted Sep 14, 1993·43 cites·17 claims
- 0278US5095472AFocusing error detecting system for optical headHITACHI CABLE·Filed 1990·Granted Mar 10, 1992·38 cites·7 claims
- 0373US4242695ALow dark current photo-semiconductor deviceHITACHI LTD·Filed 1979·Granted Dec 30, 1980·35 cites·20 claims
- 0470US7570904B2Image forming apparatusRICOH PRINTING SYS LTD·Filed 2005·Granted Aug 4, 2009·3 cites·20 claims
- 0557US4740819APhoto semiconductor deviceHITACHI LTD·Filed 1986·Granted Apr 26, 1988·17 cites·6 claims
- 0655US4367483AOptical semiconductor deviceHITACHI LTD·Filed 1980·Granted Jan 4, 1983·19 cites·7 claims
- 0755US4346395ALight detecting photodiode-MIS transistor deviceHITACHI LTD·Filed 1980·Granted Aug 24, 1982·16 cites·9 claims
- 0849US2009180810A1Image forming apparatusRICOH KK·Filed 2009·Application pending·0 cites
- 0945US5634183AImage printerHITACHI KOKI KK·Filed 1996·Granted May 27, 1997·8 cites·3 claims
- 1044US7144667B2Electrostatic charge image developing toner, and developer, image forming apparatus and image forming method using the same tonerRICOH PRINTING SYS LTD·Filed 2004·Granted Dec 5, 2006·2 cites·19 claims
- 1142US4816890AOptoelectronic deviceHITACHI LTD·Filed 1986·Granted Mar 28, 1989·7 cites·15 claims
- 1235US7813674B2Developing toner for electrophotography and electro-photographic deviceRICOH KK·Filed 2004·Granted Oct 12, 2010·0 cites·19 claims
- 1335US7435519B2Electrophotographic toner and image forming apparatusRICOH PRINTING SYS LTD·Filed 2005·Granted Oct 14, 2008·0 cites·9 claims
- 1435US4563764ASemiconductor laser deviceHITACHI LTD·Filed 1983·Granted Jan 7, 1986·3 cites·6 claims
- 1533US2004058259A1Electrostatic charge image developing toner and image forming apparatus using the sameHITACHI PRINTING SOLUTIONS LTD·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →