Inventor · disambiguated record
Kouji Oizumi
Also filed as: OIZUMI KOUJI
19 granted patents·446 citations·filing 1985–1993
96Inventor score
Files withCANON KK19
Top patents by PatentIndex Score
19 records- 0190US5270857AOptical system for stabilizing an imageCANON KK·Filed 1988·Granted Dec 14, 1993·73 cites·33 claims
- 0290US4842395AFinder of variable magnificationCANON KK·Filed 1988·Granted Jun 27, 1989·69 cites·21 claims
- 0381US5253005ASmall-sized cameraCANON KK·Filed 1991·Granted Oct 12, 1993·21 cites·21 claims
- 0477US5305148ACompact varifocal lensCANON KK·Filed 1993·Granted Apr 19, 1994·43 cites·47 claims
- 0574US4757336AView finder of variable magnificationCANON KK·Filed 1986·Granted Jul 12, 1988·32 cites·7 claims
- 0672US4871238APhotographic optical device with variable magnificationCANON KK·Filed 1987·Granted Oct 3, 1989·30 cites·9 claims
- 0767US4702581AFlash device for cameraCANON KK·Filed 1985·Granted Oct 27, 1987·10 cites·8 claims
- 0865US4949107ACamera having telescopic capabilityCANON KK·Filed 1989·Granted Aug 14, 1990·9 cites·9 claims
- 0964US5270866ACompact zoom lensCANON KK·Filed 1991·Granted Dec 14, 1993·26 cites·77 claims
- 1062US4751539AVariable power finderCANON KK·Filed 1987·Granted Jun 14, 1988·20 cites·11 claims
- 1159US4830474AVariable magnification optical systemCANON KK·Filed 1986·Granted May 16, 1989·18 cites·9 claims
- 1256US4726668AZoom lens of short total lengthCANON KK·Filed 1985·Granted Feb 23, 1988·17 cites·9 claims
- 1354US4697882ABeam splitter for changing optical paths small tiltCANON KK·Filed 1985·Granted Oct 6, 1987·16 cites·8 claims
- 1452US4770508AConversion lens releasably attached behind master lensCANON KK·Filed 1986·Granted Sep 13, 1988·14 cites·8 claims
- 1550US5055868AVariable magnification finder of real image typeCANON KK·Filed 1989·Granted Oct 8, 1991·13 cites·14 claims
- 1645US5125735AAutomatic multi-point distance measuring deviceCANON KK·Filed 1990·Granted Jun 30, 1992·12 cites·2 claims
- 1745US4643536ARear conversion lensCANON KK·Filed 1985·Granted Feb 17, 1987·10 cites·6 claims
- 1840US4957356AFinder deviceCANON KK·Filed 1988·Granted Sep 18, 1990·8 cites·12 claims
- 1936US4652091ACompact zoom lens with short back focal distanceCANON KK·Filed 1985·Granted Mar 24, 1987·5 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →