Inventor
SUDO RYOICHI
JP33 patents
⚠️ This page may combine multiple inventors who share the name “SUDO RYOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
31 patentsUS5401610AMar 28, 1995
Optical disc
HITACHI LTD31 citations96
US6191675B1Feb 20, 2001
High voltage transformer and ignition transformer using the same
HITACHI LTD39 citations92
US5766407AJun 16, 1998
Optical disk producing apparatus
HITACHI LTD24 citations92
US5582677ADec 10, 1996
Optical disk producing apparatus
HITACHI LTD25 citations92
US4897228AJan 30, 1990
Method for producing optical disk base
HITACHI LTD44 citations92
US4729938AMar 8, 1988
Optical disc base plate having a primer layer formed of an ultraviolet-cured resin composition
HITACHI LTD46 citations92
US4668550AMay 26, 1987
Optical disc
HITACHI LTD26 citations92
US4437731AMar 20, 1984
Liquid crystal display device
HITACHI LTD31 citations92
US4420500ADec 13, 1983
Composition and process for preparing transparent conducting film
HITACHI LTD33 citations92
US4145369AMar 20, 1979
Flame-retardant epoxy resin compositions
HITACHI LTD37 citations92
US5543271AAug 6, 1996
Optical recording and reproduction apparatus
HITACHI LTD10 citations82
US5244775ASep 14, 1993
Method of manufacturing an optical disc
HITACHI LTD13 citations82
US4369208AJan 18, 1983
Process for producing transparent electroconductive film
HITACHI LTD25 citations82
US4303554ADec 1, 1981
Composition and process for producing transparent conductive film
HITACHI LTD28 citations82
US4273420AJun 16, 1981
Liquid crystal display device
HITACHI LTD23 citations82
US5906907AMay 25, 1999
Optical disc
HITACHI LTD4 citations74
US5686227ANov 11, 1997
Optical reproduction apparatus
HITACHI LTD3 citations74
US4889757ADec 26, 1989
Optical recording disk
HITACHI LTD12 citations74
US4835027AMay 30, 1989
Optical disc
HITACHI LTD9 citations74
US4812346AMar 14, 1989
Optical disc base plate and process for producing the same
HITACHI LTD14 citations74
US4456659AJun 26, 1984
Substrate for optical disc recording media
HITACHI LTD9 citations74
US4472028ASep 18, 1984
Organosilicone homeotropic alignment layer with OH group
HITACHI LTD17 citations73
US5399758AMar 21, 1995
Diacylhydrazine photo-reactive compounds
HITACHI LTD15 citations71
US4957990ASep 18, 1990
Materials for optical use
HITACHI LTD7 citations71
US5254659AOct 19, 1993
Insulating coating composition, solderable insulated wires, production process of the insulated wires and flyback transformers using the insulated wires
HITACHI LTD9 citations68
US6573025B2Jun 3, 2003
Optical disc
HITACHI LTD1 citations63
US6465151B1Oct 15, 2002
Method of manufacturing optical discs
HITACHI LTD2 citations63
US6140028AOct 31, 2000
Optical recording and reproduction apparatus
HITACHI LTD1 citations63
US5084225AJan 28, 1992
Method for making a cathode ray tube
HITACHI LTD2 citations61
US4866338ASep 12, 1989
Unsaturated polyester resin composition for cathode ray tube and its use
HITACHI LTD5 citations61
US5071236ADec 10, 1991
Replica plate, process for producing the same and projection type television using the same
HITACHI LTD5 citations59