Inventor · disambiguated record
Goichi Yamakawa
Also filed as: YAMAKAWA GOICHI
10 granted patents·140 citations·filing 1977–1986
90Inventor score
Technology areasG03G
Top patents by PatentIndex Score
10 records- 0188US4657837AToner for developing an electrostatically charged imageKONISHIROKU PHOTO IND·Filed 1985·Granted Apr 14, 1987·33 cites·6 claims
- 0284US4514487AMethod for manufacturing toner for electrophotographyKONISHIROKU PHOTO IND·Filed 1983·Granted Apr 30, 1985·26 cites·10 claims
- 0376US4473628AToner for developing of electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1983·Granted Sep 25, 1984·18 cites·7 claims
- 0467US4968574AToner for electrophotographySEKISUI CHEMICAL CO LTD·Filed 1986·Granted Nov 6, 1990·15 cites·3 claims
- 0566US4518674ADeveloping material for electrophotography, process for preparationKONISHIROKU PHOTO IND·Filed 1984·Granted May 21, 1985·13 cites·8 claims
- 0659US4623604ATriboelectric 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
- 0757US4572885ADeveloper composition for developing an electrostatic imageKONISHIROKU PHOTO IND·Filed 1982·Granted Feb 25, 1986·9 cites·28 claims
- 0853US4564573AElectrostatic image forming tonerKONISHIROKU PHOTO IND·Filed 1984·Granted Jan 14, 1986·8 cites·10 claims
- 0940US4107062AToner for developing electrostatic latent images comprising an amine-epoxy resin mixtureKONISHIROKU PHOTO IND·Filed 1977·Granted Aug 15, 1978·3 cites·8 claims
- 1039US4287283AIron powder developing carrier and the manufacturing method of the same, developer containing said carrier and method of forming visible image by using said developerKONISHIROKU PHOTO IND·Filed 1978·Granted Sep 1, 1981·3 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →