Inventor
KAWAMURA ICHIRO
JP38 patents
⚠️ This page may combine multiple inventors who share the name “KAWAMURA ICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
24 patentsUS5812511ASep 22, 1998
Disk recording and reproducing apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD84 citations95
US5878013AMar 2, 1999
Recording and reproducing apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32 citations93
US5737293AApr 7, 1998
Disc loading apparatus for loading optical discs in a cartridge or without
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD52 citations93
US5825151AOct 20, 1998
Apparatus for driving stepping motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US5799009AAug 25, 1998
Disk cartridge with an inclined groove
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations82
US5107484AApr 21, 1992
Arrangement of recording/reproducing apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations81
US5923509AJul 13, 1999
Disk cartridge with judging recesses
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations74
US5907535AMay 25, 1999
Disk cartridge with positioning hole
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74
US5901129AMay 4, 1999
Tray with positioning protrusion for loading a disk cartridge
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US5854777ADec 29, 1998
Recording medium cartridge and signal recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations74
US5764622AJun 9, 1998
Recording medium cartridge and signal recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations74
US5200940AApr 6, 1993
Optical unit actuator for information recording/reproducing apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations73
US5278821AJan 11, 1994
Cleaning cartridge for an optical recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations72
US5229983AJul 20, 1993
Bias magnetic field generating apparatus for magneto-optical recording and reproducing system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations72
US5124975AJun 23, 1992
Device for opening and closing a shutter of a disk cartridge
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations72
US5206849AApr 27, 1993
Object lens holder and driving device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations62
US4482991ANov 13, 1984
Disk recording and reproducing device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations61
US4807216AFeb 21, 1989
Recording disc playback apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations57
US4623995ANov 18, 1986
Recording disc reproducing device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations57
USRE40141EMar 4, 2008
Recording medium cartridge and signal recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52
USRE38848EOct 25, 2005
Recording medium cartridge and signal recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52
USRE37659EApr 16, 2002
Recording medium cartridge and signal recording apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations52
US5260929ANov 9, 1993
Optical disk drive including dust-proofing annular projections
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations51
US4802155AJan 31, 1989
Recording disc playback apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations47
SHOWA SHELL SEKIYU
11 patentsUS5417885AMay 23, 1995
Antiferroelectric liquid crystal compound
SHOWA SHELL SEKIYU30 citations92
US5204020AApr 20, 1993
Liquid crystal compounds
SHOWA SHELL SEKIYU11 citations73
US5194179AMar 16, 1993
Liquid crystal compounds
SHOWA SHELL SEKIYU11 citations73
US5184847AFeb 9, 1993
Liquid crystal compounds
SHOWA SHELL SEKIYU13 citations73
US5262086ANov 16, 1993
Liquid crystal compounds
SHOWA SHELL SEKIYU10 citations69
US4946989AAug 7, 1990
Optically active compound
SHOWA SHELL SEKIYU4 citations63
US5891359AApr 6, 1999
Liquid crystal compound
SHOWA SHELL SEKIYU3 citations62
US5116531AMay 26, 1992
Liquid crystal compound
SHOWA SHELL SEKIYU5 citations62
US5207946AMay 4, 1993
Liquid crystal compounds
SHOWA SHELL SEKIYU3 citations60
US5436037AJul 25, 1995
Liquid crystal orientation controlling membranes and liquid crystal elements using the same
SHOWA SHELL SEKIYU4 citations57
US5837163ANov 17, 1998
Liquid crystal compounds
SHOWA SHELL SEKIYU0 citations50