Inventor
KUMAI YOSHITOMO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “KUMAI YOSHITOMO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
19 patentsUS7755717B2Jul 13, 2010
Polarizing element, polarizing element manufacturing method, liquid crystal device, and projection display
SEIKO EPSON CORP7 citations73
US9977168B2May 22, 2018
Optical element, method for manufacturing the same, and electronic apparatus
SEIKO EPSON CORP3 citations72
USRE49885EMar 26, 2024
Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatus
SEIKO EPSON CORP0 citations62
US10859744B2Dec 8, 2020
Method of manufacturing wire grid polarization element
SEIKO EPSON CORP1 citations62
US9164307B2Oct 20, 2015
Polarizer, polarizer producing process, projector, liquid crystal device, and electronic device
SEIKO EPSON CORP3 citations62
US7608474B2Oct 27, 2009
Method for manufacturing optical element
SEIKO EPSON CORP3 citations62
US7969534B2Jun 28, 2011
Polarizing element, polarizing element manufacturing method, liquid crystal device, and projection display
SEIKO EPSON CORP0 citations52
US11762271B2Sep 19, 2023
Projector
SEIKO EPSON CORP0 citations51
US11346990B2May 31, 2022
Polarizing element, liquid crystal apparatus and electronic apparatus
SEIKO EPSON CORP0 citations51
US10866349B2Dec 15, 2020
Wire grid polarization element and electronic device
SEIKO EPSON CORP0 citations51
US10386557B2Aug 20, 2019
Optical element, method for manufacturing the same, and electronic apparatus
SEIKO EPSON CORP0 citations51
USRE47179EDec 25, 2018
Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatus
SEIKO EPSON CORP0 citations51
USRE45993EMay 3, 2016
Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatus
SEIKO EPSON CORP0 citations51
US9201170B2Dec 1, 2015
Method for producing polarizing element
SEIKO EPSON CORP0 citations51
US8771530B2Jul 8, 2014
Method for producing polarizing element
SEIKO EPSON CORP0 citations51
US7894020B2Feb 22, 2011
Polarizing device, method for manufacturing the same, liquid crystal device, and projection display device
SEIKO EPSON CORP1 citations51
US10877363B2Dec 29, 2020
Display device and reflective polarizing element
SEIKO EPSON CORP0 citations41
US7666468B2Feb 23, 2010
Method for manufacturing optical element
SEIKO EPSON CORP0 citations41
US10503005B2Dec 10, 2019
Wire grid polarization element and projection type display apparatus
SEIKO EPSON CORP0 citations39
KUMAI YOSHITOMO
12 patentsUS8619215B2Dec 31, 2013
Optical element, method for manufacturing the same, liquid crystal device, and electronic apparatus
KUMAI YOSHITOMO16 citations83
US8416371B2Apr 9, 2013
Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatus
KUMAI YOSHITOMO7 citations83
US8567215B2Oct 29, 2013
Method for producing polarizing element
KUMAI YOSHITOMO2 citations62
US8549880B2Oct 8, 2013
Method for producing polarizing element
KUMAI YOSHITOMO2 citations62
US8471984B2Jun 25, 2013
Polarizing element, method for producing same, liquid crystal device, electronic apparatus, and projection display
KUMAI YOSHITOMO3 citations62
US8467017B2Jun 18, 2013
Polarizing element, method for producing same, liquid crystal device, electronic apparatus, and projection display
KUMAI YOSHITOMO2 citations62
US8094373B2Jan 10, 2012
Polarization element, method for manufacturing the same, liquid crystal device, and electronic apparatus
KUMAI YOSHITOMO3 citations62
US8593593B2Nov 26, 2013
Polarization element, projector, liquid crystal device, electronic apparatus, and method of manufacturing polarization element
KUMAI YOSHITOMO1 citations51
US8488070B2Jul 16, 2013
Polarizing element and method for manufacturing the same, projection type display, liquid crystal device, and electronic apparatus
KUMAI YOSHITOMO1 citations51
US8724056B2May 13, 2014
Polarizing element, liquid crystal device, and electronic apparatus
KUMAI YOSHITOMO0 citations41
US8687151B2Apr 1, 2014
Polarization element comprising a plurality of metal protruding sections formed in a striped manner having first and second heat radiation sections tilted in opposite directions
KUMAI YOSHITOMO0 citations41
US8205992B2Jun 26, 2012
Polarization element and projection display device
KUMAI YOSHITOMO0 citations41