Inventor
OHISHI TETSU
JP44 patents
⚠️ This page may combine multiple inventors who share the name “OHISHI TETSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
33 patentsUS5926153AJul 20, 1999
Multi-display apparatus
HITACHI LTD93 citations97
US7535648B2May 19, 2009
Projection type image display
HITACHI LTD20 citations93
US7245429B2Jul 17, 2007
Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
HITACHI LTD20 citations92
US6201516B1Mar 13, 2001
Projector, projecting system, system for sensation and method of manufacturing translucent screen
HITACHI LTD25 citations92
US5833340ANov 10, 1998
Sensory integration system and image display device and concave mirror for use in the same system
HITACHI LTD27 citations92
US5295018AMar 15, 1994
Polarization transforming optics, polarizing beam splitter and liquid crystal display
HITACHI LTD51 citations92
US6462794B1Oct 8, 2002
Image forming unit, enlarging unit, optical parts, and image display apparatus having these components
HITACHI LTD46 citations91
US4645712AFeb 24, 1987
Information recording medium
HITACHI LTD30 citations90
US5808704ASep 15, 1998
Rear projection type image display apparatus
HITACHI LTD33 citations89
US7670007B2Mar 2, 2010
Projection display, projection optical system and transmission lens or free curved lens
HITACHI LTD8 citations84
US7586687B2Sep 8, 2009
Projecting optical unit and projecting type image display apparatus therewith
HITACHI LTD12 citations84
US7467872B2Dec 23, 2008
Projection optical unit and projection type video display device using the unit
HITACHI LTD16 citations84
US7176876B2Feb 13, 2007
Display apparatus
HITACHI LTD10 citations84
US7362503B2Apr 22, 2008
Screen, Fresnel lens sheet used for the same, and image display apparatus using the same
HITACHI LTD7 citations74
US7261421B2Aug 28, 2007
Optical projector and image display apparatus using the same
HITACHI LTD8 citations74
US7460301B2Dec 2, 2008
Image display apparatus, and transmissive screen and reflecting mirror used for same
HITACHI LTD8 citations73
US7961400B2Jun 14, 2011
Projecting optical unit and projecting type image display apparatus therewith
HITACHI LTD2 citations63
US7095558B2Aug 22, 2006
Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
HITACHI LTD4 citations63
US6910775B2Jun 28, 2005
Projection-type video display
HITACHI LTD5 citations63
US6798580B2Sep 28, 2004
Projection type image display apparatus
HITACHI LTD4 citations63
US7095169B2Aug 22, 2006
Flat panel display device
HITACHI LTD6 citations61
US4918683AApr 17, 1990
Optical information medium having a base plate made of polymethylmethacrylate which is a copolymer of methyl methacrylate and methyl acrylate
HITACHI LTD5 citations58
US7697202B2Apr 13, 2010
Screen, fresnel lens sheet used for the same, and image display apparatus using the same
HITACHI LTD1 citations52
US7581838B2Sep 1, 2009
Optical projector and image display apparatus using the same
HITACHI LTD1 citations52
US7551352B2Jun 23, 2009
Image display apparatus, as well as, Fresnel lens sheet and screen to be used therein
HITACHI LTD1 citations52
US7436593B2Oct 14, 2008
Screen, fresnel lens sheet used therefor, and image display apparatus using the same
HITACHI LTD0 citations52
US7358934B2Apr 15, 2008
Field emission display apparatus with improved white balance
HITACHI LTD1 citations52
US7675679B2Mar 9, 2010
Image display device and Fresnel lens sheet used therefor
HITACHI LTD0 citations42
US7440186B2Oct 21, 2008
Screen, a fresnel lens sheet used for the screen, and an image display apparatus using the screen
HITACHI LTD0 citations42
US7403335B2Jul 22, 2008
Screen, Fresnel lens sheet used for the same, and image display apparatus using the same
HITACHI LTD0 citations42
US7529023B2May 5, 2009
Image display, Fresnel lens and screen
HITACHI LTD0 citations41
US7298080B2Nov 20, 2007
Display device
HITACHI LTD0 citations41
US7271783B2Sep 18, 2007
Display device
HITACHI LTD0 citations41
NIPPON ZEON CO
10 patentsUS4384081AMay 17, 1983
Process for production of hydrogenated conjugated diene polymers
NIPPON ZEON CO56 citations95
US4111867ASep 5, 1978
Rubber composition for tire treads
NIPPON ZEON CO19 citations78
US4968753ANov 6, 1990
Acrylonitrile rubber with quinoline compound, organic peroxide, crosslinking agent
NIPPON ZEON CO10 citations74
US4096135AJun 20, 1978
Vulcanized product of terpolymer and process for preparation thereof
NIPPON ZEON CO7 citations74
US4248985AFeb 3, 1981
Sulfur-curable acrylic rubber composition
NIPPON ZEON CO17 citations72
US4228265AOct 14, 1980
Process for producing sulfur-curable acrylic rubbers
NIPPON ZEON CO13 citations72
US5089576AFeb 18, 1992
Process for producing conjugated diene copolymer
NIPPON ZEON CO11 citations68
US5019630AMay 28, 1991
Rubbery copolymer, process for production thereof, and vulcanizable elastomer composition
NIPPON ZEON CO5 citations58
US3939138AFeb 17, 1976
Radical polymerization initiator andd process for its preparation
NIPPON ZEON CO3 citations58
US4255567AMar 10, 1981
Process for producing NBR with octyl-to decyl sulfates
NIPPON ZEON CO5 citations54