Inventor · disambiguated record
Tsutomu Onuma
Also filed as: ONUMA TSUTOMU
31 granted patents·1 pending application·1,041 citations·filing 1980–2007
98Inventor score
Top patents by PatentIndex Score
32 records- 0196US5968701AToner and image forming methodCANON KK·Filed 1998·Granted Oct 19, 1999·79 cites·55 claims
- 0295US7745089B2Process for producing toner, and tonerCANON KK·Filed 2007·Granted Jun 29, 2010·18 cites·5 claims
- 0394US5977515AUnderwater laser processing device including chamber with partitioning wallHITACHI LTD·Filed 1995·Granted Nov 2, 1999·126 cites·16 claims
- 0493US7273686B2TonerCANON KK·Filed 2004·Granted Sep 25, 2007·49 cites·5 claims
- 0592US7288354B2TonerCANON KK·Filed 2004·Granted Oct 30, 2007·42 cites·12 claims
- 0691US5938954ASubmerged laser beam irradiation equipmentHITACHI LTD·Filed 1996·Granted Aug 17, 1999·100 cites·20 claims
- 0791US5364722AToner for developing electrostatic image and heat-fixing method comprising a hydrocarbon waxCANON KK·Filed 1992·Granted Nov 15, 1994·48 cites·78 claims
- 0890US7351509B2TonerCANON KK·Filed 2004·Granted Apr 1, 2008·34 cites·7 claims
- 0990US5384224AToner for developing electrostatic imageCANON KK·Filed 1993·Granted Jan 24, 1995·46 cites·33 claims
- 1087US4499158AWelded structural member having high erosion resistanceHITACHI LTD·Filed 1983·Granted Feb 12, 1985·48 cites·4 claims
- 1186US4348131AWelded structure having improved mechanical strength and process for making sameHITACHI LTD·Filed 1980·Granted Sep 7, 1982·41 cites·12 claims
- 1285US6541174B1Method using toner and developer for developing electrostatic imageCANON KK·Filed 2000·Granted Apr 1, 2003·20 cites·127 claims
- 1385US6077638AToner and developer for developing electrostatic image, process for production thereof and image forming methodCANON KK·Filed 1997·Granted Jun 20, 2000·29 cites·54 claims
- 1484US6458499B1Toner having hydrocarbon wax with specific ester value and hydroxyl valueCANON KK·Filed 2001·Granted Oct 1, 2002·23 cites·33 claims
- 1584US6120961AToner for developing electrostatic imagesCANON KK·Filed 1997·Granted Sep 19, 2000·35 cites·15 claims
- 1684US6020102APositive-chargeable toner, image forming method and apparatus unitCANON KK·Filed 1998·Granted Feb 1, 2000·34 cites·102 claims
- 1780US6589701B2Dry toner, image forming method and process cartridgeCANON KK·Filed 2001·Granted Jul 8, 2003·20 cites·52 claims
- 1880US5605778AToner with wax component for developing electrostatic imageCANON KK·Filed 1996·Granted Feb 25, 1997·30 cites·21 claims
- 1978US6673506B2Toner production processCANON KK·Filed 2001·Granted Jan 6, 2004·17 cites·24 claims
- 2078US6426169B1Toner containing azo iron compoundCANON KK·Filed 2000·Granted Jul 30, 2002·17 cites·20 claims
- 2178US6007957AMagnetic toner, image forming method and process cartridgeCANON KK·Filed 1998·Granted Dec 28, 1999·27 cites·101 claims
- 2275US5628449AMethod of welding a carbon steel and an austenitic stainless steel together and resultant structureHITACHI LTD·Filed 1995·Granted May 13, 1997·37 cites·8 claims
- 2374US7306889B2Process for producing toner, and tonerCANON KK·Filed 2004·Granted Dec 11, 2007·11 cites·5 claims
- 2472US6630275B2Magnetic toner and process cartridgeCANON KK·Filed 2002·Granted Oct 7, 2003·12 cites·10 claims
- 2570US6187496B1Toner and developer for developing electrostatic image, process for production thereof and image forming methodCANON KK·Filed 1997·Granted Feb 13, 2001·16 cites·63 claims
- 2670US5601411AStainless steel type 13Cr5Ni having high toughness, and usage the sameHITACHI LTD·Filed 1995·Granted Feb 11, 1997·21 cites·4 claims
- 2769US6537716B1Toner for developing electrostatic images and heat fixing methodCANON KK·Filed 1996·Granted Mar 25, 2003·20 cites·15 claims
- 2862US7457572B2Image forming method and process cartridge using specific toner regulating blade and tonerCANON KK·Filed 2006·Granted Nov 25, 2008·2 cites·7 claims
- 2958US5654992AMethod of repairing structural materials of nuclear reactor internals and apparatus thereforHITACHI LTD·Filed 1995·Granted Aug 5, 1997·25 cites·16 claims
- 3056US6810217B2Process cartridgeCANON KK·Filed 2002·Granted Oct 26, 2004·6 cites·6 claims
- 3145US5879132AStainless steel type 13Cr5Ni having high toughness, and usage of the sameHITACHI LTD·Filed 1996·Granted Mar 9, 1999·8 cites·15 claims
- 3234US2003198883A1TonerFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →