Inventor
TAKAHASHI SADAO
JP74 patents
⚠️ This page may combine multiple inventors who share the name “TAKAHASHI SADAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
34 patentsUS6744916B1Jun 1, 2004
Image processing apparatus and method for interpolating missing pixels
RICOH KK73 citations98
US5911004AJun 8, 1999
Image processing apparatus for discriminating image characteristics using image signal information obtained in an image scanning operation
RICOH KK117 citations98
US5585896ADec 17, 1996
Image forming apparatus with a contact member contacting an image carrier
RICOH KK311 citations98
US7489415B2Feb 10, 2009
Document processing system
RICOH KK114 citations97
US6651894B2Nov 25, 2003
Imaging method, imaging apparatus, and image information management system
RICOH KK78 citations97
US6898329B1May 24, 2005
Image binarization apparatus, image binarization method, image pickup apparatus, image pickup method, and a computer product
RICOH KK54 citations96
US5825937AOct 20, 1998
Spatial-filtering unit for performing adaptive edge-enhancement process
RICOH KK70 citations96
US5394231AFeb 28, 1995
Image forming apparatus capable of forming an erasable image
RICOH KK105 citations96
US4634264AJan 6, 1987
Photosensitive member of recording apparatus
RICOH KK56 citations96
US6634559B2Oct 21, 2003
Data sheet and information management system using data sheet
RICOH KK43 citations95
US5574538ANov 12, 1996
Method and apparatus for removing image forming substance from image holding member forming processing situation mark
RICOH KK55 citations95
US5805954ASep 8, 1998
Image forming apparatus that detects environmental conditions
RICOH KK23 citations93
US5321483AJun 14, 1994
Cleaning device for image forming equipment
RICOH KK23 citations93
US6959866B2Nov 1, 2005
2-Dimensional code pattern, 2-dimensional code pattern supporting medium, 2-dimensional code pattern generating method, and 2-dimensional code reading apparatus and method
RICOH KK18 citations92
US6935565B2Aug 30, 2005
Imaging method, imaging apparatus, and image information management system
RICOH KK30 citations92
USRE37645EApr 9, 2002
Method and apparatus for removing image forming substance from image holding member forming processing situation mark
RICOH KK34 citations92
US6095164AAug 1, 2000
Method and apparatus for removing image forming substance from image holding member
RICOH KK26 citations92
US5753400AMay 19, 1998
Method for repeatedly using image holding member
RICOH KK19 citations92
US5610691AMar 11, 1997
Image forming apparatus having a contact charging member and a cleaning member
RICOH KK29 citations92
US5605777AFeb 25, 1997
Method and apparatus for regenerating image holding member
RICOH KK31 citations92
US5572293ANov 5, 1996
Method of and system for cleaning a charge inducing member
RICOH KK42 citations92
US5557373ASep 17, 1996
Cleaning system for charging drum of an image forming apparatus
RICOH KK41 citations92
US5547793AAug 20, 1996
Method for using image support regeneratively and tool for forming image on image support
RICOH KK21 citations92
US4791454ADec 13, 1988
Removable photoconductive element unit for image-forming apparatus
RICOH KK49 citations92
US6948654B2Sep 27, 2005
Data sheet and information management system using data sheet
RICOH KK21 citations91
US6097914AAug 1, 2000
Image bearing member and method of manufacturing the member and image forming apparatus using the member
RICOH KK23 citations88
US7012719B1Mar 14, 2006
Sign sensitive aperture correction system and method
RICOH KK11 citations84
US7787712B2Aug 31, 2010
Electronic document creating apparatus
RICOH KK19 citations83
US7623727B2Nov 24, 2009
Image binarization apparatus, image binarization method, image pickup apparatus, image pickup method, and a computer product
RICOH KK6 citations74
US5512708AApr 30, 1996
Toner used in an image forming apparatus
RICOH KK9 citations74
USRE36963ENov 21, 2000
Method and apparatus for regenerating image holding member
RICOH KK12 citations73
US6047758AApr 11, 2000
Method for repeatedly using image holding member
RICOH KK13 citations73
US4563076AJan 7, 1986
Imaging apparatus
RICOH KK17 citations73
US4019054AApr 19, 1977
Apparatus for fixing toner images
RICOH KK9 citations73
HITACHI LTD
5 patentsUS4884396ADec 5, 1989
Desulfurizing agent and process for treating hydrogen sulfide containing gas, coal gasification system and power generation system based on coal gasification using the desulfurizing agent
HITACHI LTD35 citations92
US5782032AJul 21, 1998
Coal gasification furnace with a slag tap hole of specific shape
HITACHI LTD32 citations90
US5083020AJan 21, 1992
Mass spectrometer
HITACHI LTD20 citations82
US4803355AFeb 7, 1989
Mass spectrometer
HITACHI LTD9 citations74
US5016237AMay 14, 1991
Prism optics stable with respect to wavelength and temperature variations and optical information processing apparatus
HITACHI LTD7 citations73
TOKYO SHIBAURA ELECTRIC CO
3 patentsUS4163201AJul 31, 1979
Elastic surface wave device
TOKYO SHIBAURA ELECTRIC CO31 citations92
US4346322AAug 24, 1982
Elastic surface wave device
TOKYO SHIBAURA ELECTRIC CO7 citations74
US4245200AJan 13, 1981
Method of intermediate frequency filtration in a television receiver
TOKYO SHIBAURA ELECTRIC CO6 citations73
RICOH CO LTD
2 patentsKISHI HIDENOBU
1 patentAGENCY IND SCIENCE TECHN
1 patentTOSHIBA ELECTRIC EQUIP
1 patentTAKAHASHI SADAO
1 patentJUJO PAPER CO LTD
1 patentBABCOCK HITACHI KK
1 patentShowing the top 50 of 74 patents by PatentIndex Score.