Inventor
YOKOYAMA EIJI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA EIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI ELECTRIC CORP
16 patentsUS5602688AFeb 11, 1997
Method and apparatus for controlling surface pressure exerted on a movable magnetic head by a recording medium
MITSUBISHI ELECTRIC CORP24 citations93
US5566378AOct 15, 1996
Movable head position controlling device for magnetic recording and reproducing apparatuses
MITSUBISHI ELECTRIC CORP19 citations93
US5481417AJan 2, 1996
Tape tension control for a magnetic recording and reproducing apparatus that adjusts spacing error based on the reproduced signal envelope
MITSUBISHI ELECTRIC CORP20 citations93
US5384676AJan 24, 1995
Magnetic head position controller in a magnetic recording and reproducing apparatus
MITSUBISHI ELECTRIC CORP34 citations93
US5986984ANov 16, 1999
Optical information processing device having switchable optics for use with plural media types
MITSUBISHI ELECTRIC CORP23 citations91
US5404252AApr 4, 1995
Movable head position controlling device for magnetic recording and reproducing apparatuses
MITSUBISHI ELECTRIC CORP19 citations82
US6947359B2Sep 20, 2005
Optical disk device for data defect detection and use
MITSUBISHI ELECTRIC CORP8 citations74
US5395066AMar 7, 1995
Tape tension control for a magnetic recording and reproducing apparatus
MITSUBISHI ELECTRIC CORP12 citations74
US5157563AOct 20, 1992
Magnetic recording and reproducing apparatus using an electromagnetic actuator for automatic tracking
MITSUBISHI ELECTRIC CORP15 citations74
US5725168AMar 10, 1998
Magnetic recording and reproducing apparatus for controlling the tension of a magnetic tape
MITSUBISHI ELECTRIC CORP9 citations73
US5343342AAug 30, 1994
Magnetic recording and playback system with feedback control of a movable transducer head
MITSUBISHI ELECTRIC CORP9 citations68
US7116611B2Oct 3, 2006
Position control method
MITSUBISHI ELECTRIC CORP5 citations63
US10495281B2Dec 3, 2019
Projection optical instrument and headlight device
MITSUBISHI ELECTRIC CORP1 citations59
US11101760B2Aug 24, 2021
Electric motor control device
MITSUBISHI ELECTRIC CORP0 citations52
US5947402ASep 7, 1999
Magnetic recording and reproducing apparatus for controlling the tension of a magnetic tape
MITSUBISHI ELECTRIC CORP1 citations51
US11586231B2Feb 21, 2023
Reaction compensation device and fast steering mirror system
MITSUBISHI ELECTRIC CORP0 citations47
ROHM CO LTD
8 patentsUS6724503B1Apr 20, 2004
Image sensor substrate and image sensor employing it
ROHM CO LTD57 citations96
US6654218B1Nov 25, 2003
Protection circuit module for rechargeable battery and method of making the same
ROHM CO LTD11 citations74
US6236422B1May 22, 2001
Thermal printhead and protective cover used for the same
ROHM CO LTD8 citations74
US6469724B1Oct 22, 2002
Thick-film thermal print head and its manufacturing method
ROHM CO LTD9 citations73
US6448993B1Sep 10, 2002
Construction of thermal print head and method of forming protective coating
ROHM CO LTD12 citations73
US6424367B1Jul 23, 2002
Thick-film thermal printhead
ROHM CO LTD6 citations62
US6304280B1Oct 16, 2001
Thermal printhead and method of making the same
ROHM CO LTD4 citations62
US6489757B2Dec 3, 2002
Optical interface with low-voltage relay unit and high-voltage regulation unit
ROHM CO LTD6 citations59