P

Inventor

NAKAMURA KEIJI

JP62 patents
⚠️ This page may combine multiple inventors who share the name “NAKAMURA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI ELECTRIC CORP

15 patents
US5434834AJul 18, 1995

Optical recording and reproducing apparatus for tracking wobbling guide grooves

MITSUBISHI ELECTRIC CORP121 citations98
US5303216AApr 12, 1994

Optical recording and reproducing apparatus for tracking wobbling guide grooves

MITSUBISHI ELECTRIC CORP43 citations96
US5383169AJan 17, 1995

Optical recording and reproducing apparatus for tracking wobbling guide grooves

MITSUBISHI ELECTRIC CORP24 citations92
US5305294AApr 19, 1994

Magneto-optical recording/reproducing system having an electromagnetic actuator

MITSUBISHI ELECTRIC CORP28 citations92
US5247493ASep 21, 1993

Magneto-optical recording and reproducing disk device having a bimorph type actuator with specific structures for mounting a magnetic head in opposing to the surface of the disk

MITSUBISHI ELECTRIC CORP35 citations92
US5182739AJan 26, 1993

Apparatus for maintaining a disk and optical head in orthogonal relation

MITSUBISHI ELECTRIC CORP24 citations92
US5986984ANov 16, 1999

Optical information processing device having switchable optics for use with plural media types

MITSUBISHI ELECTRIC CORP23 citations91
US7239461B2Jul 3, 2007

Objective lens drive device

MITSUBISHI ELECTRIC CORP7 citations74
US7016125B2Mar 21, 2006

Objective lens-driving apparatus

MITSUBISHI ELECTRIC CORP4 citations63
US6888689B2May 3, 2005

Objective lens driving apparatus

MITSUBISHI ELECTRIC CORP3 citations63
US6687062B2Feb 3, 2004

Objective lens-driving apparatus

MITSUBISHI ELECTRIC CORP4 citations63
US10564381B2Feb 18, 2020

Illumination device

MITSUBISHI ELECTRIC CORP1 citations62
US7031234B2Apr 18, 2006

Objective lens driving apparatus

MITSUBISHI ELECTRIC CORP0 citations52
US6894850B2May 17, 2005

Objective lens driving apparatus

MITSUBISHI ELECTRIC CORP0 citations52
US8042130B2Oct 18, 2011

Optical driving device including a holder with a top face having a closed structure

MITSUBISHI ELECTRIC CORP0 citations42

MITSUBISHI RAYON CO

5 patents

NEC CORP

4 patents

HOFFMANN LA ROCHE

4 patents

MABUCHI MOTOR CO

3 patents

NIPPON PISTON RING CO LTD

3 patents

TANAKA PRECIOUS METAL IND

2 patents

SHARP KK

2 patents

NAKAMURA KEIJI

2 patents

FUJI HEAVY IND LTD

2 patents

MITSUI SHIPBUILDING ENG

1 patent

RICOH KK

1 patent

NIPPON ELECTRIC CO

1 patent

KK ZEN ON GAKUFU SHUPPANSHA

1 patent

UNIV NAGOYA NAT UNIV CORP

1 patent

DAINIPPON SUMITOMO PHARMA CO

1 patent

SUBARU CORP

1 patent

HITACHI MAXELL

1 patent

Showing the top 50 of 62 patents by PatentIndex Score.