Inventor · disambiguated record
Hiroyuki Takagiwa
Also filed as: TAKAGIWA HIROYUKI
26 granted patents·561 citations·filing 1981–1994
97Inventor score
Top patents by PatentIndex Score
26 records- 0197US4863824AToner for developing electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1988·Granted Sep 5, 1989·81 cites·9 claims
- 0295US4557991AToner for development of electrostatic image containing binder resin and waxKONISHIROKU PHOTO IND·Filed 1984·Granted Dec 10, 1985·63 cites·35 claims
- 0387US4960664ADeveloper composition for developing electrostatic image and toner image forming processKONISHIROKU PHOTO IND·Filed 1989·Granted Oct 2, 1990·32 cites·10 claims
- 0485US5445910ADeveloper for developing electrostatic image comprising a toner containing colorant particles having organic particles externally added theretoKONISHIROKU PHOTO IND·Filed 1994·Granted Aug 29, 1995·31 cites·10 claims
- 0585US4917983AToner for developing an electrostatic latent image comprising linear polyester polymerKONISHIROKU PHOTO IND·Filed 1988·Granted Apr 17, 1990·57 cites·17 claims
- 0684US4514487AMethod for manufacturing toner for electrophotographyKONISHIROKU PHOTO IND·Filed 1983·Granted Apr 30, 1985·26 cites·10 claims
- 0779US5047305AElectrostatic-image developing polyester toner with release agentKONISHIROKU PHOTO IND·Filed 1989·Granted Sep 10, 1991·22 cites·14 claims
- 0878US5486898AColor image forming apparatus with photoreceptor protectorKONISHIROKU PHOTO IND·Filed 1994·Granted Jan 23, 1996·24 cites·25 claims
- 0974US5021317AElectrostatic latent image developer with toner particles surface treated with a polysiloxane having ammonium salt functional groupsKONISHIROKU PHOTO IND·Filed 1988·Granted Jun 4, 1991·18 cites·18 claims
- 1072US4415644AElectrostatic image developing toner and a method for the production thereofKONISHIROKU PHOTO IND·Filed 1981·Granted Nov 15, 1983·15 cites·25 claims
- 1171US4507378AMethod for the production of toner for electrophotography and the toner produced therebyKONISHIROKU PHOTO IND·Filed 1983·Granted Mar 26, 1985·17 cites·10 claims
- 1271US4486559AToner composition for the development of electrostatic latent images and a method of preparing the sameKONISHIROKU PHOTO IND·Filed 1981·Granted Dec 4, 1984·17 cites·28 claims
- 1370US4514486AMethod for the formation of imagesKONISHIROKU PHOTO IND·Filed 1983·Granted Apr 30, 1985·14 cites·11 claims
- 1469US4943507AToner for developing electrostatic latent image and method for developing electrostatic latent image with the sameKONISHIROKU PHOTO IND·Filed 1989·Granted Jul 24, 1990·16 cites·26 claims
- 1568US5116713AToner for developing latent electrostatic imageKONISHIROKU PHOTO IND·Filed 1990·Granted May 26, 1992·17 cites·18 claims
- 1665US5441839ANegatively chargeable developer with carrier containing magnesium oxideKONISHIROKU PHOTO IND·Filed 1994·Granted Aug 15, 1995·14 cites·13 claims
- 1764US4600676AToner composition containing titanate coupling agent for electrophotography and method for producing said tonerTERADA SADATUGU·Filed 1984·Granted Jul 15, 1986·13 cites·17 claims
- 1860US4448871AToner for developing an electrostatically charged image and manufacturing method thereofKONISHIROKU PHOTO IND·Filed 1981·Granted May 15, 1984·10 cites·2 claims
- 1959US5225304APositive-electrification tonerKONISHIROKU PHOTO IND·Filed 1991·Granted Jul 6, 1993·12 cites·9 claims
- 2059US4623604ATriboelectric stabilized toner for developing electrically charged images and a method for the production thereofKONISHIROKU PHOTO IND·Filed 1985·Granted Nov 18, 1986·12 cites·18 claims
- 2154US5026620AMethod for forming electrophotographic imagesKONISHIROKU PHOTO IND·Filed 1989·Granted Jun 25, 1991·9 cites·12 claims
- 2253US4877704AProcess for developing latent electrostatic image using toner containing polyester resinKONISHIROKU PHOTO IND·Filed 1988·Granted Oct 31, 1989·15 cites·21 claims
- 2351US4543311AToner image pressure fixing methodKONISHIROKU PHOTO IND·Filed 1982·Granted Sep 24, 1985·7 cites·41 claims
- 2448US5272038AElectrostatic image developing resin-coated carrier and method for producing the sameKONISHIROKU PHOTO IND·Filed 1991·Granted Dec 21, 1993·7 cites·18 claims
- 2547US5104762ADeveloper for electrophotographyKONISHIROKU PHOTO IND·Filed 1991·Granted Apr 14, 1992·7 cites·10 claims
- 2640US5093220AElectrostatic latent image developerKONISHIROKU PHOTO IND·Filed 1990·Granted Mar 3, 1992·5 cites·9 claims
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