Inventor
FUJITA KAZUHIRO
JP152 patents
⚠️ This page may combine multiple inventors who share the name “FUJITA KAZUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
19 patentsUS7048388B2May 23, 2006
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH KK140 citations99
US7637621B2Dec 29, 2009
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH KK26 citations96
US7631975B2Dec 15, 2009
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH KK25 citations96
US7441908B2Oct 28, 2008
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH KK35 citations96
US7637618B2Dec 29, 2009
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH KK17 citations93
US6905211B2Jun 14, 2005
Color separation device, imaging optical engine, and projection apparatus
RICOH KK20 citations93
US7753531B2Jul 13, 2010
Image display apparatus and projection optical system
RICOH KK27 citations92
US7561336B2Jul 14, 2009
Micro-optical device, spatial optical modulator and projector utilizing the micro-optical device
RICOH KK45 citations92
US7077546B2Jul 18, 2006
Illumination apparatus and liquid crystal projector using the illumination apparatus
RICOH KK27 citations92
US6866404B2Mar 15, 2005
Illumination apparatus and a liquid crystal projector using the illumination apparatus
RICOH KK35 citations92
US6177667B1Jan 23, 2001
Imaging device
RICOH KK40 citations92
US5604606AFeb 18, 1997
Picture reading apparatus with flaring light elimination capability
RICOH KK30 citations92
US5107477AApr 21, 1992
Integrated optical pick-up device
RICOH KK29 citations92
US5060212AOct 22, 1991
Integrated optical pick-up device
RICOH KK36 citations92
US4935911AJun 19, 1990
Optical head device for recording and reproducing information
RICOH KK30 citations92
US5907438AMay 25, 1999
Imaging device
RICOH KK31 citations91
US7646536B2Jan 12, 2010
Reflective screen and display system
RICOH KK10 citations84
US7529032B2May 5, 2009
Projection optical system and image display apparatus
RICOH KK15 citations84
US6181473B1Jan 30, 2001
Image device for forming an erected image
RICOH KK16 citations84
RICOH CO LTD
8 patentsUS7995275B2Aug 9, 2011
Polarization conversion element, polarization conversion optical system and image projecting apparatus
RICOH CO LTD62 citations98
USRE45258ENov 25, 2014
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH CO LTD14 citations93
US7938545B2May 10, 2011
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH CO LTD14 citations93
US7922341B2Apr 12, 2011
Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus
RICOH CO LTD13 citations93
US8025415B2Sep 27, 2011
Projection optical system and image projecting apparatus
RICOH CO LTD14 citations84
US7946717B2May 24, 2011
Projection optical system and image projecting apparatus
RICOH CO LTD18 citations84
US7911704B2Mar 22, 2011
Projection optical system and image display apparatus
RICOH CO LTD7 citations84
US7857458B2Dec 28, 2010
Image display device and image projection device
RICOH CO LTD11 citations84
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
6 patentsUSD417323SNov 30, 1999
Electric vacuum cleaner
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96
USD399617SOct 13, 1998
Electric vacuum cleaner
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD73 citations96
USD490953SJun 1, 2004
Electric iron
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations93
USD468070SDec 31, 2002
Electric iron
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations93
USD430366SAug 29, 2000
Electric vacuum cleaner
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92
USD368560SApr 2, 1996
Electric vacuum cleaner
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations92
FUJITA KAZUHIRO
4 patentsUS8911092B2Dec 16, 2014
Illuminating device, projecting device, and method for controlling projecting device
FUJITA KAZUHIRO23 citations92
US9594296B2Mar 14, 2017
Illumination device including a wavelength converter
FUJITA KAZUHIRO7 citations84
US8254039B2Aug 28, 2012
Variable magnification optical system and projector
FUJITA KAZUHIRO11 citations84
US8128238B2Mar 6, 2012
Projection optical system and image displaying apparatus
FUJITA KAZUHIRO9 citations84
TAKAHASHI TATSUYA
4 patentsUS9400416B2Jul 26, 2016
Illumination light source device including a reflecting-transmitting element, projection device including the illumination light source device and method to control the projection device
TAKAHASHI TATSUYA10 citations84
US9185372B2Nov 10, 2015
Illumination apparatus and projection apparatus having a light guiding unit which guides light to a fluorescent material
TAKAHASHI TATSUYA13 citations84
US8905550B2Dec 9, 2014
Projection optical system and image projection device
TAKAHASHI TATSUYA8 citations84
US8511837B2Aug 20, 2013
Projection optical system and image projector
TAKAHASHI TATSUYA12 citations84
ASMO CO LTD
1 patentPANASONIC CORP
1 patentKANZAKI SPECIALTY PAPERS INC
1 patentSEIKO INSTR INC
1 patentMATSUSHITA HOME APPLIANCE CORP OF AMERICA
1 patentTODA KOGYO CORP
1 patentYAMAHA CORP
1 patentCKD CORP
1 patentABE ISSEI
1 patentShowing the top 50 of 152 patents by PatentIndex Score.