Inventor · disambiguated record
Kou Ishizuka
Also filed as: ISHIZUKA KOU
15 granted patents·393 citations·filing 1989–2004
94Inventor score
Files withCANON KK15
Top patents by PatentIndex Score
15 records- 0187US5880839AOptical displacement measuring apparatus including a light-emitting element and an adjacent ball lensCANON KK·Filed 1997·Granted Mar 9, 1999·67 cites·22 claims
- 0287US5663794ADisplacement information detection apparatus, scale used in the apparatus, and drive apparatus using the apparatusCANON KK·Filed 1996·Granted Sep 2, 1997·49 cites·24 claims
- 0383US5534693AOptical displacement detection apparatus employing diffraction gratings and a reference position sensor located on the scaleCANON KK·Filed 1995·Granted Jul 9, 1996·52 cites·26 claims
- 0478US6005667AOptical displacement measurement apparatus and information recording apparatusCANON KK·Filed 1997·Granted Dec 21, 1999·31 cites·24 claims
- 0574US6151185APosition detecting apparatus, positioning apparatus, and information recording apparatus using the sameCANON KK·Filed 1997·Granted Nov 21, 2000·26 cites·16 claims
- 0672US5917182ARotation detector and controller for detecting rotation information using a grating interference systemCANON KK·Filed 1996·Granted Jun 29, 1999·30 cites·24 claims
- 0769US5956140ADisplacement detection apparatus and drive control apparatus using the same constructed to prevent collision between gratingsCANON KK·Filed 1996·Granted Sep 21, 1999·28 cites·29 claims
- 0868US6831267B2Optical encoderCANON KK·Filed 2001·Granted Dec 14, 2004·10 cites·11 claims
- 0967US6631047B2Interference device, position detecting device, positioning device and information recording apparatus using the sameCANON KK·Filed 1998·Granted Oct 7, 2003·19 cites·13 claims
- 1067US5930066AInformation recording apparatusCANON KK·Filed 1997·Granted Jul 27, 1999·19 cites·12 claims
- 1163US5883384ARotational displacement information detection apparatusCANON KK·Filed 1997·Granted Mar 16, 1999·22 cites·25 claims
- 1257US5067813AOptical apparatus for measuring displacement of an objectCANON KK·Filed 1989·Granted Nov 26, 1991·12 cites·18 claims
- 1355US5742391AOptical type sensor for use as an optical measuring head or optical pickupCANON KK·Filed 1995·Granted Apr 21, 1998·17 cites·21 claims
- 1446US6999179B2Optical encoderCANON KK·Filed 2004·Granted Feb 14, 2006·2 cites·7 claims
- 1534US6259531B1Displacement information measuring apparatus with hyperbolic diffraction gratingCANON KK·Filed 1999·Granted Jul 10, 2001·9 cites·14 claims
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