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 patentsUS5434834AJul 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 patentsUS6486234B1Nov 26, 2002
Impact modifier, process for production, and resin composition containing the same
MITSUBISHI RAYON CO11 citations74
US5942581AAug 24, 1999
Lubricant for a thermoplastic resin and a thermoplastic resin composition comprising thereof
MITSUBISHI RAYON CO10 citations74
US6833409B2Dec 21, 2004
Impact modifier, process for producing the same, and thermoplastic resin composition containing the same
MITSUBISHI RAYON CO5 citations63
US7671129B2Mar 2, 2010
Polycarbonate/graft copolymer compositions
MITSUBISHI RAYON CO3 citations60
US7317043B2Jan 8, 2008
Impact modifier, process for producing the same, and thermoplastic resin composition
MITSUBISHI RAYON CO4 citations60
NEC CORP
4 patentsUS4570096AFeb 11, 1986
Electromechanical translation device comprising an electrostrictive driver of a stacked ceramic capacitor type
NEC CORP47 citations92
US6449411B1Sep 10, 2002
Optical wavelength tunable filter
NEC CORP13 citations74
US6229643B1May 8, 2001
Optical fiber amplifier surge protective apparatus
NEC CORP10 citations74
US6646792B2Nov 11, 2003
Light amplifier and light transmission system using the same
NEC CORP6 citations63
HOFFMANN LA ROCHE
4 patentsUS4559403ADec 17, 1985
Substituted isoquinolines
HOFFMANN LA ROCHE34 citations91
US4544657AOct 1, 1985
Substituted isoquinolines
HOFFMANN LA ROCHE4 citations61
US4891429AJan 2, 1990
Antiarrhythmic agents
HOFFMANN LA ROCHE0 citations51
US4696930ASep 29, 1987
N-(heteroarylalkyl)acylanilide derivatives as antiarrhythmic agents
HOFFMANN LA ROCHE0 citations51
MABUCHI MOTOR CO
3 patentsUS6245166B1Jun 12, 2001
Material for sliding contact, composite clad material, and small-sized direct current motor using the same
MABUCHI MOTOR CO20 citations91
US7876017B2Jan 25, 2011
Commutator and brush materials for small electric motor, clad composite material, and small electric DC motor using the same
MABUCHI MOTOR CO2 citations61
US6638334B2Oct 28, 2003
Sliding contact material comprising Ag-Ni based alloy having Ni metal particles dispersed and clad composite material, and Dc compact motor using the same
MABUCHI MOTOR CO5 citations58
NIPPON PISTON RING CO LTD
3 patentsTANAKA PRECIOUS METAL IND
2 patentsSHARP KK
2 patentsNAKAMURA KEIJI
2 patentsFUJI HEAVY IND LTD
2 patentsMITSUI SHIPBUILDING ENG
1 patentRICOH KK
1 patentNIPPON ELECTRIC CO
1 patentKK ZEN ON GAKUFU SHUPPANSHA
1 patentUNIV NAGOYA NAT UNIV CORP
1 patentDAINIPPON SUMITOMO PHARMA CO
1 patentSUBARU CORP
1 patentHITACHI MAXELL
1 patentShowing the top 50 of 62 patents by PatentIndex Score.