Inventor · disambiguated record
Hirohide Tanikawa
Also filed as: TANIKAWA HIROHIDE
71 granted patents·7 pending applications·2,071 citations·filing 1986–2009
99Inventor score
Top patents by PatentIndex Score
78 records- 0198US7396626B2TonerCANON KK·Filed 2005·Granted Jul 8, 2008·55 cites·6 claims
- 0297US8142972B2Developer for replenishment and image forming methodHOTTA YOJIRO·Filed 2006·Granted Mar 27, 2012·53 cites·6 claims
- 0397US7816063B2Color toner and two-component developerCANON KK·Filed 2009·Granted Oct 19, 2010·31 cites·1 claims
- 0497US7611813B2Toner and image forming methodCANON KK·Filed 2007·Granted Nov 3, 2009·58 cites·4 claims
- 0597US7455947B2Yellow toner, image forming apparatus and a method for producing a tonerCANON KK·Filed 2007·Granted Nov 25, 2008·26 cites·3 claims
- 0697US7442478B2Toner and method for forming imageCANON KK·Filed 2007·Granted Oct 28, 2008·34 cites·5 claims
- 0797US6203959B1TonerCANON KK·Filed 2000·Granted Mar 20, 2001·80 cites·16 claims
- 0897US5202213ADeveloper with surface treated silicic acid for developing electrostatic imageCANON KK·Filed 1992·Granted Apr 13, 1993·76 cites·24 claims
- 0996US5968701AToner and image forming methodCANON KK·Filed 1998·Granted Oct 19, 1999·79 cites·55 claims
- 1095US7288348B2Color tonerCANON KK·Filed 2004·Granted Oct 30, 2007·60 cites·13 claims
- 1195US7279262B2Magnetic carrier and two-component developerCANON KK·Filed 2004·Granted Oct 9, 2007·60 cites·21 claims
- 1295US5009973AImage forming method and image forming apparatusCANON KK·Filed 1989·Granted Apr 23, 1991·53 cites·99 claims
- 1395US4985327ANon-magnetic tonerCANON KK·Filed 1990·Granted Jan 15, 1991·64 cites·35 claims
- 1494US6235441B1Positively chargeable toner, image forming method and image forming apparatusCANON KK·Filed 1999·Granted May 22, 2001·67 cites·87 claims
- 1594US6156471AToner and image forming methodCANON KK·Filed 2000·Granted Dec 5, 2000·51 cites·35 claims
- 1694US5014089ADeveloper in an image forming device having a binding resin and magnetic powderCANON KK·Filed 1990·Granted May 7, 1991·56 cites·3 claims
- 1794US4957840ADeveloper and image forming deviceCANON KK·Filed 1988·Granted Sep 18, 1990·44 cites·22 claims
- 1892US6875549B2Dry toner, toner production process, image forming method and process cartridgeCANON KK·Filed 2002·Granted Apr 5, 2005·41 cites·10 claims
- 1992US5707770AToner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing tonerCANON KK·Filed 1995·Granted Jan 13, 1998·51 cites·91 claims
- 2091US5364722AToner for developing electrostatic image and heat-fixing method comprising a hydrocarbon waxCANON KK·Filed 1992·Granted Nov 15, 1994·48 cites·78 claims
- 2190US7138213B2Cyan toner and method for forming an imageCANON KK·Filed 2004·Granted Nov 21, 2006·34 cites·21 claims
- 2290US6881527B2Toner, and process cartridgeCANON KK·Filed 2003·Granted Apr 19, 2005·36 cites·6 claims
- 2390US6653036B1Magnetic toner and image forming methodCANON KK·Filed 1998·Granted Nov 25, 2003·49 cites·34 claims
- 2490US5384224AToner for developing electrostatic imageCANON KK·Filed 1993·Granted Jan 24, 1995·46 cites·33 claims
- 2589US4737432APositively chargeable toner and developer for developing electrostatic images contains di-organo tin borate charge controllerCANON KK·Filed 1986·Granted Apr 12, 1988·32 cites·51 claims
- 2688US7452647B2Color tonerCANON KK·Filed 2004·Granted Nov 18, 2008·28 cites·5 claims
- 2788US7320850B2Magenta tonerCANON KK·Filed 2004·Granted Jan 22, 2008·25 cites·14 claims
- 2888US7112395B2Color tonerCANON KK·Filed 2004·Granted Sep 26, 2006·30 cites·13 claims
- 2988US5202731AImage forming apparatus having an alternating bias electric fieldCANON KK·Filed 1992·Granted Apr 13, 1993·39 cites·23 claims
- 3086US6696211B2Developer, image-forming method, and process cartridgeCANON KK·Filed 2001·Granted Feb 24, 2004·22 cites·70 claims
- 3185US6541174B1Method using toner and developer for developing electrostatic imageCANON KK·Filed 2000·Granted Apr 1, 2003·20 cites·127 claims
- 3285US6077638AToner 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
- 3384US6458499B1Toner having hydrocarbon wax with specific ester value and hydroxyl valueCANON KK·Filed 2001·Granted Oct 1, 2002·23 cites·33 claims
- 3484US6120961AToner for developing electrostatic imagesCANON KK·Filed 1997·Granted Sep 19, 2000·35 cites·15 claims
- 3584US6020102APositive-chargeable toner, image forming method and apparatus unitCANON KK·Filed 1998·Granted Feb 1, 2000·34 cites·102 claims
- 3682US7544457B2Color toner and two-component developerCANON KK·Filed 2004·Granted Jun 9, 2009·17 cites·5 claims
- 3781US5268248AToner for developing electrostatic image and process for production thereofCANON KK·Filed 1991·Granted Dec 7, 1993·27 cites·41 claims
- 3881US4952476AElectrophotographic magnetic toner containing polyalkylene and vinyl polymerCANON KK·Filed 1989·Granted Aug 28, 1990·23 cites·20 claims
- 3979US6232027B1Toner having negative triboelectric chargeability and image forming methodCANON KK·Filed 1999·Granted May 15, 2001·30 cites·129 claims
- 4078US6673506B2Toner production processCANON KK·Filed 2001·Granted Jan 6, 2004·17 cites·24 claims
- 4178US6426169B1Toner containing azo iron compoundCANON KK·Filed 2000·Granted Jul 30, 2002·17 cites·20 claims
- 4278US5824442ADeveloping method, image forming method, and heat fixing method, with tonerCANON KK·Filed 1997·Granted Oct 20, 1998·24 cites·161 claims
- 4378US5175070AImage forming method and image forming apparatusCANON KK·Filed 1990·Granted Dec 29, 1992·25 cites·23 claims
- 4476US4978597AImage forming method and image forming apparatus utilizing a toner-carrying member with spherical concavitiesCANON KK·Filed 1989·Granted Dec 18, 1990·19 cites·45 claims
- 4574US5504272AMagnetic toner having defined particle distributionCANON KK·Filed 1994·Granted Apr 2, 1996·17 cites·11 claims
- 4672US6630275B2Magnetic toner and process cartridgeCANON KK·Filed 2002·Granted Oct 7, 2003·12 cites·10 claims
- 4772US5500318AToner for developing electrostatic image and fixing methodCANON KK·Filed 1994·Granted Mar 19, 1996·16 cites·33 claims
- 4870US6187496B1Toner 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
- 4969US6537716B1Toner for developing electrostatic images and heat fixing methodCANON KK·Filed 1996·Granted Mar 25, 2003·20 cites·15 claims
- 5069US4999272AElectrophotographic analog and digital imaging and developing using magnetic tonerCANON KK·Filed 1989·Granted Mar 12, 1991·15 cites·18 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hirohide Tanikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →