Inventor
HASHIZUME TOSHIAKI
JP88 patents
⚠️ This page may combine multiple inventors who share the name “HASHIZUME TOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
49 patentsUS5865521AFeb 2, 1999
Projection-type display apparatus
SEIKO EPSON CORP92 citations99
US6000802ADec 14, 1999
Projection-type display apparatus
SEIKO EPSON CORP52 citations96
US5743610AApr 28, 1998
Projection-type display apparatus
SEIKO EPSON CORP102 citations96
US5988818ANov 23, 1999
Projection type liquid crystal projector
SEIKO EPSON CORP50 citations95
US5651599AJul 29, 1997
Projection type liquid crystal projector
SEIKO EPSON CORP53 citations95
US5418586AMay 23, 1995
Projection type liquid crystal projector
SEIKO EPSON CORP55 citations95
US6935753B2Aug 30, 2005
Projector
SEIKO EPSON CORP33 citations93
US6833953B2Dec 21, 2004
Polarizer and optical device using the polarizer
SEIKO EPSON CORP16 citations93
US6523958B2Feb 25, 2003
Optical component and projector using the same
SEIKO EPSON CORP20 citations93
US6471358B1Oct 29, 2002
Lighting device and projector
SEIKO EPSON CORP17 citations93
US6411449B1Jun 25, 2002
Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism
SEIKO EPSON CORP25 citations93
US6394607B1May 28, 2002
Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device
SEIKO EPSON CORP50 citations93
US6375328B2Apr 23, 2002
Optical modulation element and projector
SEIKO EPSON CORP24 citations93
US6342971B1Jan 29, 2002
Projector using a light-selective prism
SEIKO EPSON CORP21 citations93
US6154320ANov 28, 2000
Polarizing conversion device, polarizing illuminations device, and display apparatus and projector using the devices
SEIKO EPSON CORP35 citations93
US6109752AAug 29, 2000
Lighting device and projector
SEIKO EPSON CORP29 citations93
US6089718AJul 18, 2000
Projection display device
SEIKO EPSON CORP34 citations93
US5986809ANov 16, 1999
Polarization conversion element, polarization illuminator, display using the same illuminator, and projection type display
SEIKO EPSON CORP24 citations93
US7008180B2Mar 7, 2006
Axial-flow fan and projector provided with the same
SEIKO EPSON CORP26 citations92
US6935745B1Aug 30, 2005
Optical device, method for manufacturing optical device, and projector
SEIKO EPSON CORP23 citations92
US6854848B2Feb 15, 2005
Optical device and projector
SEIKO EPSON CORP30 citations92
US6843277B2Jan 18, 2005
Duct and electronic apparatus having the duct
SEIKO EPSON CORP29 citations92
USRE38084EApr 22, 2003
Projector
SEIKO EPSON CORP16 citations92
US6273569B1Aug 14, 2001
Illuminating optical system and projector
SEIKO EPSON CORP39 citations92
US6092901AJul 25, 2000
Polarizing illumination device and projection display device
SEIKO EPSON CORP43 citations92
US7549771B2Jun 23, 2009
Light source device and projector
SEIKO EPSON CORP10 citations84
US7150543B2Dec 19, 2006
Optical modulator holder, optical device, and projector
SEIKO EPSON CORP13 citations84
US6072635AJun 6, 2000
Dichroic prism and projection display apparatus
SEIKO EPSON CORP15 citations82
US7159990B2Jan 9, 2007
Method of manufacturing reflective mirror, illumination device, and projector
SEIKO EPSON CORP7 citations74
US7085051B2Aug 1, 2006
Polarizer and optical device using the polarizer
SEIKO EPSON CORP5 citations74
US7036941B2May 2, 2006
Illumination optical device and projector
SEIKO EPSON CORP8 citations74
USRE39040EMar 28, 2006
Projector
SEIKO EPSON CORP6 citations74
US6702443B2Mar 9, 2004
Projector
SEIKO EPSON CORP7 citations74
US6690521B2Feb 10, 2004
Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism
SEIKO EPSON CORP12 citations74
US6633435B2Oct 14, 2003
Illumination optical system and projector comprising the same
SEIKO EPSON CORP9 citations74
US6536901B2Mar 25, 2003
Projector
SEIKO EPSON CORP12 citations74
US6247817B1Jun 19, 2001
Projector
SEIKO EPSON CORP9 citations74
US6172815B1Jan 9, 2001
Dichroic prism and projection display apparatus
SEIKO EPSON CORP9 citations74
US6155686ADec 5, 2000
Projection display device
SEIKO EPSON CORP8 citations74
US6152566ANov 28, 2000
Projector for modulating polarized luminous flux
SEIKO EPSON CORP12 citations74
US6142634ANov 7, 2000
Projector
SEIKO EPSON CORP12 citations74
US6109751AAug 29, 2000
Projector and lighting optical system therefor
SEIKO EPSON CORP15 citations74
US5973840AOct 26, 1999
Projection display and illuminating optical system for it
SEIKO EPSON CORP10 citations74
USD408310SApr 20, 1999
Reflector
SEIKO EPSON CORP8 citations74
US11572502B2Feb 7, 2023
Wavelength conversion element, light source device, projector, and method of manufacturing wavelength conversion element
SEIKO EPSON CORP2 citations73
US11237469B2Feb 1, 2022
Wavelength conversion element, light source device, and projector
SEIKO EPSON CORP2 citations73
US11172176B2Nov 9, 2021
Wavelength conversion element, light source device, projector, and method of manufacturing wavelength conversion element
SEIKO EPSON CORP2 citations73
US9964842B2May 8, 2018
Light source apparatus and projector
SEIKO EPSON CORP2 citations73
USRE42740ESep 27, 2011
Projector
SEIKO EPSON CORP6 citations73
FURUKAWA ELECTRIC CO LTD
1 patentShowing the top 50 of 88 patents by PatentIndex Score.