Inventor
MATSUOKA KAZUHIKO
JP51 patents
⚠️ This page may combine multiple inventors who share the name “MATSUOKA KAZUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
33 patentsUS4872743AOct 10, 1989
Varifocal optical element
CANON KK92 citations96
US4729641AMar 8, 1988
Functional optical element having a non-flat planar interface with variable-index medium
CANON KK55 citations96
US5420848AMay 30, 1995
Optical system for optical information recording/reproducing apparatus having a galvano mirror
CANON KK29 citations93
US5267226ANov 30, 1993
Optical information recording and reproducing apparatus with switchable spot-functions
CANON KK48 citations93
US4842396AJun 27, 1989
Light modulation element and light modulation apparatus
CANON KK40 citations93
US4585296AApr 29, 1986
Scanning optical system having a tilting correcting function
CANON KK28 citations93
US4447112AMay 8, 1984
Scanning optical system having a tilting correcting function
CANON KK31 citations93
US4379612AApr 12, 1983
Scanning optical system having a fall-down correcting function
CANON KK33 citations93
US6462866B1Oct 8, 2002
Imaging optical system and original reading apparatus
CANON KK42 citations92
US5010534AApr 23, 1991
Optical information recording-reproducing apparatus
CANON KK25 citations92
US4848879AJul 18, 1989
Light modulating device
CANON KK39 citations92
US4787075ANov 22, 1988
Optical information recording medium and apparatus for recording/reproducing information using the same
CANON KK32 citations92
US4523801AJun 18, 1985
Scanning optical system subjected to a moisture proof treatment
CANON KK21 citations81
US6525764B2Feb 25, 2003
Image read method for performing image signal processes complying with the color of a reference portion of a recording medium, and image read apparatus adopting the method
CANON KK10 citations74
US6289134B1Sep 11, 2001
Image read method and apparatus for optimizing shading conditions
CANON KK12 citations74
US5517480AMay 14, 1996
Magneto-optical information reproducing apparatus that splits a light beam into at least three light beams advancing in the same direction
CANON KK16 citations74
US5289313AFeb 22, 1994
Optical head using semiconductor laser array as light source
CANON KK18 citations74
US5247505ASep 21, 1993
Information recording method for reciprocally recording and verifying information
CANON KK9 citations74
US5119356AJun 2, 1992
Information recording and reproducing apparatus including detection of whether an information recording medium has been normally loaded into the apparatus
CANON KK8 citations74
US5018123AMay 21, 1991
Optical information recording medium and method for recording information on said medium and reproducing information therefrom
CANON KK9 citations74
US4979807ADec 25, 1990
Biaspherical single lens for an optical information recording-reproducing apparatus
CANON KK12 citations74
US4973836ANov 27, 1990
Optical pickup device including a beam splitter having an inclined plane
CANON KK17 citations74
US4932763AJun 12, 1990
Aspherical single lens system for use with optical cards
CANON KK14 citations74
US4922351AMay 1, 1990
Optical information recording and reproducing apparatus
CANON KK11 citations74
US4912697AMar 27, 1990
Apparatus and method for preventing recording errors due to a reduction in the relative speed between an information carrying light beam and a recording medium
CANON KK9 citations74
US4751394AJun 14, 1988
Apparatus for recording and/or reproducing information using a card-like recording medium
CANON KK18 citations74
US4517589AMay 14, 1985
Colored image reading apparatus
CANON KK7 citations74
US4443055AApr 17, 1984
Scanning optical system having a tilting correcting function
CANON KK15 citations74
US4641920AFeb 10, 1987
Optical element having the function of changing the cross-sectional intensity distribution of a light beam
CANON KK8 citations70
US6288734B1Sep 11, 2001
Scanning optical device and image forming apparatus using the same
CANON KK2 citations63
US4865426ASep 12, 1989
Variable aberration imaging optical system
CANON KK6 citations63
US6118555ASep 12, 2000
Image reading apparatus having a light source including a fluorescent lamp
CANON KK2 citations62
US5490129AFeb 6, 1996
Optical head and optical information reading apparatus
CANON KK2 citations61
HITACHI LTD
9 patentsUS5463459AOct 31, 1995
Method and apparatus for analyzing the state of generation of foreign particles in semiconductor fabrication process
HITACHI LTD145 citations99
US5841893ANov 24, 1998
Inspection data analyzing system
HITACHI LTD76 citations95
US6650409B1Nov 18, 2003
Semiconductor device producing method, system for carrying out the same and semiconductor work processing apparatus included in the same system
HITACHI LTD39 citations92
US6185322B1Feb 6, 2001
Inspection system and method using separate processors for processing different information regarding a workpiece such as an electronic device
HITACHI LTD15 citations92
US4670137AJun 2, 1987
Impurity detector
HITACHI LTD22 citations82
US6330352B1Dec 11, 2001
Inspection data analyzing system
HITACHI LTD11 citations81
US6628817B2Sep 30, 2003
Inspection data analyzing system
HITACHI LTD9 citations73
US6529619B2Mar 4, 2003
Inspection data analyzing system
HITACHI LTD9 citations73
US6339653B1Jan 15, 2002
Inspection data analyzing system
HITACHI LTD7 citations73
ROLAND CORP
4 patentsUS6376758B1Apr 23, 2002
Electronic score tracking musical instrument
ROLAND CORP35 citations92
US6333455B1Dec 25, 2001
Electronic score tracking musical instrument
ROLAND CORP32 citations91
US7375275B2May 20, 2008
Electronic instrument and reproduction system
ROLAND CORP12 citations84
US7963792B2Jun 21, 2011
Plug detachment prevention structure
ROLAND CORP4 citations63
RENESAS TECH CORP
2 patentsUS7177020B2Feb 13, 2007
Method and apparatus for analyzing the state of generation of foreign particles in semiconductor fabrication process
RENESAS TECH CORP15 citations92
US6894773B2May 17, 2005
Method and apparatus for analyzing the state of generation of foreign particles in semiconductor fabrication process
RENESAS TECH CORP11 citations74
SYSMEX CORP
2 patentsUS11933796B2Mar 19, 2024
Quality control method, quality control system, management apparatus, analyzer, and quality control abnormality determination method
SYSMEX CORP0 citations60
US11340242B2May 24, 2022
Quality control method, quality control system, management apparatus, analyzer, and quality control abnormality determination method
SYSMEX CORP1 citations60
Showing the top 50 of 51 patents by PatentIndex Score.