Inventor
ONUMA TSUTOMU
JP31 patents
⚠️ This page may combine multiple inventors who share the name “ONUMA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
23 patentsUS5968701AOct 19, 1999
Toner and image forming method
CANON KK79 citations96
US6120961ASep 19, 2000
Toner for developing electrostatic images
CANON KK35 citations93
US6020102AFeb 1, 2000
Positive-chargeable toner, image forming method and apparatus unit
CANON KK34 citations93
US7745089B2Jun 29, 2010
Process for producing toner, and toner
CANON KK18 citations92
US7351509B2Apr 1, 2008
Toner
CANON KK34 citations92
US7288354B2Oct 30, 2007
Toner
CANON KK42 citations92
US7273686B2Sep 25, 2007
Toner
CANON KK49 citations92
US6541174B1Apr 1, 2003
Method using toner and developer for developing electrostatic image
CANON KK20 citations92
US6458499B1Oct 1, 2002
Toner having hydrocarbon wax with specific ester value and hydroxyl value
CANON KK23 citations92
US6187496B1Feb 13, 2001
Toner and developer for developing electrostatic image, process for production thereof and image forming method
CANON KK16 citations92
US6077638AJun 20, 2000
Toner and developer for developing electrostatic image, process for production thereof and image forming method
CANON KK29 citations92
US6007957ADec 28, 1999
Magnetic toner, image forming method and process cartridge
CANON KK27 citations92
US5605778AFeb 25, 1997
Toner with wax component for developing electrostatic image
CANON KK30 citations92
US5384224AJan 24, 1995
Toner for developing electrostatic image
CANON KK46 citations92
US5364722ANov 15, 1994
Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax
CANON KK48 citations92
US7306889B2Dec 11, 2007
Process for producing toner, and toner
CANON KK11 citations84
US6673506B2Jan 6, 2004
Toner production process
CANON KK17 citations84
US6589701B2Jul 8, 2003
Dry toner, image forming method and process cartridge
CANON KK20 citations84
US6537716B1Mar 25, 2003
Toner for developing electrostatic images and heat fixing method
CANON KK20 citations84
US6426169B1Jul 30, 2002
Toner containing azo iron compound
CANON KK17 citations84
US6630275B2Oct 7, 2003
Magnetic toner and process cartridge
CANON KK12 citations73
US7457572B2Nov 25, 2008
Image forming method and process cartridge using specific toner regulating blade and toner
CANON KK2 citations63
US6810217B2Oct 26, 2004
Process cartridge
CANON KK6 citations62
HITACHI LTD
8 patentsUS5977515ANov 2, 1999
Underwater laser processing device including chamber with partitioning wall
HITACHI LTD126 citations96
US5938954AAug 17, 1999
Submerged laser beam irradiation equipment
HITACHI LTD100 citations96
US5654992AAug 5, 1997
Method of repairing structural materials of nuclear reactor internals and apparatus therefor
HITACHI LTD25 citations91
US5628449AMay 13, 1997
Method of welding a carbon steel and an austenitic stainless steel together and resultant structure
HITACHI LTD37 citations91
US4499158AFeb 12, 1985
Welded structural member having high erosion resistance
HITACHI LTD48 citations91
US4348131ASep 7, 1982
Welded structure having improved mechanical strength and process for making same
HITACHI LTD41 citations91
US5601411AFeb 11, 1997
Stainless steel type 13Cr5Ni having high toughness, and usage the same
HITACHI LTD21 citations90
US5879132AMar 9, 1999
Stainless steel type 13Cr5Ni having high toughness, and usage of the same
HITACHI LTD8 citations71