Inventor · disambiguated record
Hidefumi Ohtsuka
Also filed as: OHTSUKA HIDEFUMI
11 granted patents·370 citations·filing 1987–2004
91Inventor score
Top patents by PatentIndex Score
11 records- 0192US5801704AThree-dimensional input device with displayed legend and shape-changing cursorHITACHI LTD·Filed 1995·Granted Sep 1, 1998·233 cites·8 claims
- 0283US5774777AContinuous recording medium friction-conveying mechanism in image forming apparatusHITACHI LTD·Filed 1996·Granted Jun 30, 1998·36 cites·16 claims
- 0373US6104907AImage recording apparatus which prevents variation in speed of a recording medium and reduces shift values thereofHITACHI LTD·Filed 1998·Granted Aug 15, 2000·22 cites·26 claims
- 0470US6285854B1Image recording apparatusHITACHI LTD·Filed 2000·Granted Sep 4, 2001·12 cites·6 claims
- 0569US6570802B2Semiconductor memory deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted May 27, 2003·18 cites·11 claims
- 0664US6130408ARecording apparatus with conveyed recording sheet heated by movable heaterHITACHI LTD·Filed 1998·Granted Oct 10, 2000·16 cites·6 claims
- 0758US4763143AElectrographic recording apparatusHITACHI LTD·Filed 1987·Granted Aug 9, 1988·12 cites·12 claims
- 0849US4777499AMethod and apparatus for image recordingHITACHI LTD·Filed 1988·Granted Oct 11, 1988·8 cites·14 claims
- 0947US5961864AToner image heating deviceHITACHI KOKI KK·Filed 1998·Granted Oct 5, 1999·8 cites·10 claims
- 1038US4977415AElectrostatic recording head, image recording apparatus, developing agent supplying device, display device and method of producing electrostatic recording headHITACHI LTD·Filed 1989·Granted Dec 11, 1990·4 cites·29 claims
- 1137US7158424B2Semiconductor memory deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Jan 2, 2007·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →