Inventor · disambiguated record
Keijiro Sakamoto
Also filed as: SAKAMOTO KEIJIRO
9 granted patents·172 citations·filing 1987–1999
89Inventor score
Top patents by PatentIndex Score
9 records- 0193US4880292ATransmission viewing screen of image projector apparatusMINOLTA CAMERA KK·Filed 1988·Granted Nov 14, 1989·60 cites·51 claims
- 0264US6172818B1Zoom lens systemMINOLTA CO LTD·Filed 1999·Granted Jan 9, 2001·28 cites·15 claims
- 0361US6275342B1Zoom lens systemMINOLTA CO LTD·Filed 1998·Granted Aug 14, 2001·27 cites·5 claims
- 0452US6285507B1Color image reading lens systemMINOLTA CO LTD·Filed 1999·Granted Sep 4, 2001·17 cites·13 claims
- 0552US4789880AFocusing device for use in optical apparatusesMINOLTA CAMERA KK·Filed 1987·Granted Dec 6, 1988·6 cites·21 claims
- 0650US5204780ALens system for a copying machineMINOLTA CAMERA KK·Filed 1991·Granted Apr 20, 1993·15 cites·8 claims
- 0736US5623370AGradient index lens systemMINOLTA CAMERA KK·Filed 1995·Granted Apr 22, 1997·7 cites·24 claims
- 0835US5602680AFinite conjugate distance zoom lens systemMINOLTA CO LTD·Filed 1995·Granted Feb 11, 1997·6 cites·30 claims
- 0934US5050973ASymmetrical lens system for use in copying machineMINOLTA CAMERA KK·Filed 1990·Granted Sep 24, 1991·6 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →