Inventor
OIKAWA TOMOHIRO
JP25 patents
⚠️ This page may combine multiple inventors who share the name “OIKAWA TOMOHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
17 patentsUS5878314AMar 2, 1999
Image-forming device and method of manufacturing dielectric sheet
SHARP KK31 citations92
US5799225AAug 25, 1998
Image forming apparatus having variable transfer and attraction voltage
SHARP KK19 citations92
US5708920AJan 13, 1998
Toner-image fixing device with roller-temperature limitation
SHARP KK40 citations92
US6259869B1Jul 10, 2001
Image forming apparatus
SHARP KK4 citations73
US6233422B1May 15, 2001
Image forming apparatus having transfer drum with transfer paper charging member
SHARP KK8 citations73
US6026256AFeb 15, 2000
Image forming apparatus
SHARP KK5 citations73
US5493410AFeb 20, 1996
Printer varying pixel-shape to reduce jaggedness
SHARP KK15 citations73
US5532796AJul 2, 1996
Image forming apparatus
SHARP KK7 citations72
US6169862B1Jan 2, 2001
Image forming apparatus with nip time changing device
SHARP KK1 citations62
US6081686AJun 27, 2000
Image forming apparatus having transfer drum with specific construction
SHARP KK2 citations62
US6078772AJun 20, 2000
Image-forming apparatus
SHARP KK5 citations62
US5694161ADec 2, 1997
Image forming apparatus with a light directing device for varying density of an image
SHARP KK4 citations62
US5298945AMar 29, 1994
Electrophotographic printing machine
SHARP KK4 citations62
US6606471B2Aug 12, 2003
Image forming apparatus
SHARP KK4 citations61
US6512912B2Jan 28, 2003
Image forming apparatus including transfer device outer displacive type ferroelectric layer
SHARP KK6 citations60
US6118954ASep 12, 2000
Image forming apparatus having transfer roller with charge-removing and cleaning devices
SHARP KK0 citations52
US6330408B1Dec 11, 2001
Transfer apparatus
SHARP KK0 citations51
RICOH KK
4 patentsUS5054866AOct 8, 1991
Scanning optical apparatus
RICOH KK57 citations96
US4592651AJun 3, 1986
Copier with bookbinding function
RICOH KK88 citations96
US4640611AFeb 3, 1987
Copying method for bookbinding
RICOH KK36 citations92
US5024496AJun 18, 1991
Polygonal mirror for scanning light beam
RICOH KK11 citations73
TOKYO OHKA KOGYO CO LTD
3 patentsUS9128374B2Sep 8, 2015
Resist composition and method of forming resist pattern
TOKYO OHKA KOGYO CO LTD0 citations41
US9529266B2Dec 27, 2016
Method of forming pattern
TOKYO OHKA KOGYO CO LTD0 citations40
US9459528B2Oct 4, 2016
Negative tone resist composition for solvent developing and method of forming resist pattern
TOKYO OHKA KOGYO CO LTD0 citations39