Inventor · disambiguated record
Tsunefumi Tanaka
Also filed as: TANAKA TSUNEFUMI
65 granted patents·2,052 citations·filing 1983–2013
99Inventor score
Top patents by PatentIndex Score
65 records- 0196US5580142AImage forming apparatus and projector using the sameCANON KK·Filed 1995·Granted Dec 3, 1996·78 cites·25 claims
- 0295US5757423AImage taking apparatusCANON KK·Filed 1994·Granted May 26, 1998·175 cites·10 claims
- 0393US6366411B1Reflecting type optical systemCANON KK·Filed 2000·Granted Apr 2, 2002·53 cites·10 claims
- 0491US6507359B1Image display systemCANON KK·Filed 1997·Granted Jan 14, 2003·159 cites·16 claims
- 0591US6351333B2Optical element and optical system having the sameCANON KK·Filed 1998·Granted Feb 26, 2002·105 cites·34 claims
- 0691US6166866AReflecting type optical systemCANON KK·Filed 1996·Granted Dec 26, 2000·108 cites·62 claims
- 0789US5663833AImage display apparatusCANON KK·Filed 1994·Granted Sep 2, 1997·85 cites·11 claims
- 0887US6021004AReflecting type of zoom lensCANON KK·Filed 1996·Granted Feb 1, 2000·92 cites·43 claims
- 0984US6639729B2Reflecting type of zoom lensCANON KK·Filed 2001·Granted Oct 28, 2003·23 cites·79 claims
- 1084US4912493ACamera systemCANON KK·Filed 1989·Granted Mar 27, 1990·21 cites·15 claims
- 1183US6636360B1Reflecting type of zoom lensCANON KK·Filed 2000·Granted Oct 21, 2003·20 cites·5 claims
- 1282US6301064B1Optical apparatusCANON KK·Filed 1997·Granted Oct 9, 2001·60 cites·13 claims
- 1381US6842280B2Optical element and optical apparatusCANON KK·Filed 2004·Granted Jan 11, 2005·22 cites·8 claims
- 1481US6023253AImage displaying apparatusCANON KK·Filed 1997·Granted Feb 8, 2000·59 cites·4 claims
- 1581US5694165AHigh definition image taking apparatus having plural image sensorsCANON KK·Filed 1996·Granted Dec 2, 1997·70 cites·12 claims
- 1680US8659672B2Image processing apparatus and image pickup apparatus using sameHATAKEYAMA KOSHI·Filed 2010·Granted Feb 25, 2014·4 cites·15 claims
- 1780US6292309B1Reflecting type of zoom lensCANON KK·Filed 1999·Granted Sep 18, 2001·54 cites·3 claims
- 1879US6124986AZoom optical system and image pickup apparatusCANON KK·Filed 1997·Granted Sep 26, 2000·51 cites·38 claims
- 1978US5576890AZoom lensCANON KK·Filed 1995·Granted Nov 19, 1996·51 cites·4 claims
- 2078US5568321AZoom lensCANON KK·Filed 1993·Granted Oct 22, 1996·45 cites·10 claims
- 2177US8565524B2Image processing apparatus, and image pickup apparatus using sameHATAKEYAMA KOSHI·Filed 2012·Granted Oct 22, 2013·3 cites·9 claims
- 2275US6426841B1Optical apparatusCANON KK·Filed 2001·Granted Jul 30, 2002·16 cites·8 claims
- 2375US4830477AZoom lens capable of obtaining focal lengths beyond a variable focal length rangeCANON KK·Filed 1985·Granted May 16, 1989·34 cites·14 claims
- 2474US4629294AZoom lensCANON KK·Filed 1984·Granted Dec 16, 1986·26 cites·4 claims
- 2573US7457045B2Zoom lensCANON KK·Filed 2008·Granted Nov 25, 2008·6 cites·10 claims
- 2673US4687302AZoom lensCANON KK·Filed 1986·Granted Aug 18, 1987·31 cites·11 claims
- 2772US5844713AImage displaying apparatusCANON KK·Filed 1996·Granted Dec 1, 1998·37 cites·12 claims
- 2872US5053798AAutomatic focusing deviceCANON KK·Filed 1989·Granted Oct 1, 1991·30 cites·10 claims
- 2971US5905848AImage pickup apparatus with vibration compensationCANON KK·Filed 1996·Granted May 18, 1999·39 cites·14 claims
- 3070US5905597AOptical apparatusCANON KK·Filed 1995·Granted May 18, 1999·34 cites·5 claims
- 3170US5096288AProjection apparatusCANON KK·Filed 1990·Granted Mar 17, 1992·29 cites·11 claims
- 3268US4912494ACamera systemCANON KK·Filed 1989·Granted Mar 27, 1990·25 cites·40 claims
- 3368US4749265AZoom lensCANON KK·Filed 1984·Granted Jun 7, 1988·20 cites·6 claims
- 3467US6785060B2Reflecting type optical systemCANON KK·Filed 2002·Granted Aug 31, 2004·5 cites·7 claims
- 3567US4842385AZoom lensCANON KK·Filed 1988·Granted Jun 27, 1989·25 cites·6 claims
- 3666US8988538B2Image pickup apparatus and lens apparatusCANON KK·Filed 2013·Granted Mar 24, 2015·1 cites·26 claims
- 3766US8520313B2Zoom lens and image pickup device including the sameWADA KEN·Filed 2010·Granted Aug 27, 2013·2 cites·8 claims
- 3865US5179473AZoom lensCANON KK·Filed 1990·Granted Jan 12, 1993·27 cites·8 claims
- 3965US5059007AInternally focusing zoom lensCANON KK·Filed 1990·Granted Oct 22, 1991·27 cites·8 claims
- 4062US5528427AZoom lensCANON KK·Filed 1995·Granted Jun 18, 1996·26 cites·6 claims
- 4162US4702567AZoom lensCANON KK·Filed 1987·Granted Oct 27, 1987·21 cites·5 claims
- 4261US5325236AUltra-wide-angle type zoom lensCANON KK·Filed 1992·Granted Jun 28, 1994·22 cites·8 claims
- 4360US4776680AHigh range zoom lens of reduced sizeCANON KK·Filed 1986·Granted Oct 11, 1988·19 cites·13 claims
- 4459US6215596B1Optical element, optical device provided therewith, and method for evaluating optical elementCANON KK·Filed 1999·Granted Apr 10, 2001·20 cites·19 claims
- 4559US4666257ACompact zoom lensCANON KK·Filed 1985·Granted May 19, 1987·20 cites·4 claims
- 4659US4639096AHigh range zoom lensCANON KK·Filed 1984·Granted Jan 27, 1987·15 cites·6 claims
- 4758US4586793AZoom lensCANON KK·Filed 1983·Granted May 6, 1986·14 cites·8 claims
- 4854US6812447B2Image pickup apparatus having a wave synthesizer for incident and reference lightCANON KK·Filed 2001·Granted Nov 2, 2004·1 cites·3 claims
- 4954US5229886AZoom lensCANON KK·Filed 1992·Granted Jul 20, 1993·17 cites·9 claims
- 5053US4865434AZoom lens capable of selecting a focal length beyond a standard focal length rangeCANON KK·Filed 1985·Granted Sep 12, 1989·15 cites·13 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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