P

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 patents
US7048388B2May 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 patents

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

6 patents

FUJITA KAZUHIRO

4 patents

TAKAHASHI TATSUYA

4 patents

ASMO CO LTD

1 patent

PANASONIC CORP

1 patent

KANZAKI SPECIALTY PAPERS INC

1 patent

SEIKO INSTR INC

1 patent

MATSUSHITA HOME APPLIANCE CORP OF AMERICA

1 patent

TODA KOGYO CORP

1 patent

YAMAHA CORP

1 patent

CKD CORP

1 patent

ABE ISSEI

1 patent

Showing the top 50 of 152 patents by PatentIndex Score.