Inventor
TAKISHIMA SUGURU
JP61 patents
⚠️ This page may combine multiple inventors who share the name “TAKISHIMA SUGURU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
43 patentsUS5768241AJun 16, 1998
Shutter operating mechanism for magneto-optical disk drive
ASAHI OPTICAL CO LTD39 citations96
US6411583B1Jun 25, 2002
Shutter mechanism for disk drive device
ASAHI OPTICAL CO LTD42 citations93
US5959956ASep 28, 1999
Loading drive mechanism for disk drive
ASAHI OPTICAL CO LTD24 citations93
US5477386ADec 19, 1995
Optical system for optical disc apparatus including anamorphic prisms
ASAHI OPTICAL CO LTD24 citations93
US5278401AJan 11, 1994
Optical disc apparatus having five light receiving areas for detecting focus error and tracking error
ASAHI OPTICAL CO LTD29 citations93
US5920140AJul 6, 1999
Galvano mirror unit
ASAHI OPTICAL CO LTD31 citations92
US5701216ADec 23, 1997
Shutter mechanism for disk drive cartridge insertion opening
ASAHI OPTICAL CO LTD50 citations92
US5257145AOct 26, 1993
Optical data recording and reproducing apparatus
ASAHI OPTICAL CO LTD26 citations91
US4956833ASep 11, 1990
Objective driving device for an optical disk apparatus
ASAHI OPTICAL CO LTD28 citations91
US6327066B2Dec 4, 2001
Rotation detecting system for galvano mirror
ASAHI OPTICAL CO LTD16 citations84
US6324141B2Nov 27, 2001
Optical system for optical disc drive
ASAHI OPTICAL CO LTD15 citations84
US6018393AJan 25, 2000
Evaluating system for a dual focus lens
ASAHI OPTICAL CO LTD18 citations84
US5933291AAug 3, 1999
Magnetic head carriage locking system for magneto-optical disk drive
ASAHI OPTICAL CO LTD10 citations82
US5321678AJun 14, 1994
Optical head carriage, tracking mechanism and displacement detecting mechanism
ASAHI OPTICAL CO LTD19 citations81
US6407975B1Jun 18, 2002
Optical disk drive
ASAHI OPTICAL CO LTD7 citations74
US6333910B1Dec 25, 2001
Optical system for optical disc drive
ASAHI OPTICAL CO LTD9 citations74
US6292447B1Sep 18, 2001
Head for optical disc drive
ASAHI OPTICAL CO LTD7 citations74
US6278682B1Aug 21, 2001
Optical system for optical disc drive
ASAHI OPTICAL CO LTD10 citations74
US6249500B1Jun 19, 2001
Disk loading system for a magneto-optical disk drive
ASAHI OPTICAL CO LTD7 citations74
US6011673AJan 4, 2000
Vertical positioning system for a magnetic head base
ASAHI OPTICAL CO LTD3 citations74
US5905696AMay 18, 1999
Magneto-optical disk drive
ASAHI OPTICAL CO LTD8 citations74
US5617387AApr 1, 1997
Optical system for optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD11 citations74
US5608709AMar 4, 1997
Beam splitter arrangement for magneto-optical recording device
ASAHI OPTICAL CO LTD7 citations74
US5600494AFeb 4, 1997
Objective lens system of an optical disk device
ASAHI OPTICAL CO LTD16 citations74
US5592447AJan 7, 1997
Control device for head unit having optical head and multiple magnetic heads
ASAHI OPTICAL CO LTD9 citations74
US5587973ADec 24, 1996
Magneto-optical disk drive system with magnetic head retracting mechanism and manual cartridge ejecting mechanism
ASAHI OPTICAL CO LTD14 citations74
US5577008ANov 19, 1996
Magneto-optical disk drive system
ASAHI OPTICAL CO LTD8 citations74
US5416753AMay 16, 1995
Magneto-optical disk drive system with head position adjustability
ASAHI OPTICAL CO LTD11 citations74
US5408455AApr 18, 1995
Control device for head unit having optical head and multiple magnetic heads
ASAHI OPTICAL CO LTD10 citations74
US5337300AAug 9, 1994
Signal sensing device of magneto-optic disk device for detecting error signal and information record signals with common photo sensor
ASAHI OPTICAL CO LTD14 citations74
US5309423AMay 3, 1994
Magneto-optical reproducing device with optical system having two reflective elements and providing phase difference cancellation
ASAHI OPTICAL CO LTD15 citations74
US5103345AApr 7, 1992
Optical head
ASAHI OPTICAL CO LTD11 citations74
US5078471AJan 7, 1992
Optical head
ASAHI OPTICAL CO LTD18 citations74
US6404485B1Jun 11, 2002
Rotation amount detecting system of deflection mirror for optical disc drive
ASAHI OPTICAL CO LTD10 citations73
US6341106B1Jan 22, 2002
Optical disc drive
ASAHI OPTICAL CO LTD13 citations73
US5434835AJul 18, 1995
Optical disk apparatus
ASAHI OPTICAL CO LTD7 citations73
US6243333B1Jun 5, 2001
Magneto-optical disk drive
ASAHI OPTICAL CO LTD5 citations63
US5995333ANov 30, 1999
Positioning a magnetic head base of a magneto-optical disk drive
ASAHI OPTICAL CO LTD2 citations63
US5970037AOct 19, 1999
Magneto-optical disk apparatus
ASAHI OPTICAL CO LTD6 citations63
US5956214ASep 21, 1999
Magnetic head drive mechanism in photo-electro-magnetic disk drive device
ASAHI OPTICAL CO LTD2 citations63
US5617379AApr 1, 1997
Magneto-optical disk apparatus utilizing a leakage magnetic field from a magnetic driving mechanism
ASAHI OPTICAL CO LTD5 citations63
US5544144AAug 6, 1996
Optical head structure having compactly arranged parts
ASAHI OPTICAL CO LTD6 citations63
US5513159AApr 30, 1996
Device for selecting magnetic head to be operated together with an optical head
ASAHI OPTICAL CO LTD2 citations63
PENTAX CORP
7 patentsUSD603438SNov 3, 2009
Lens
PENTAX CORP20 citations93
USD599390SSep 1, 2009
Lens
PENTAX CORP17 citations93
USD600729SSep 22, 2009
Lens
PENTAX CORP8 citations84
US6667943B1Dec 23, 2003
Optical disc apparatus
PENTAX CORP15 citations83
USD602060SOct 13, 2009
Lens
PENTAX CORP4 citations63
US6650604B1Nov 18, 2003
Optical head of disk drive
PENTAX CORP2 citations63
US6515947B1Feb 4, 2003
Optical disc drive
PENTAX CORP5 citations63
Showing the top 50 of 61 patents by PatentIndex Score.