Inventor · disambiguated record
Hachiro Tosaka
Also filed as: TOSAKA HACHIRO
12 granted patents·510 citations·filing 1982–2005
93Inventor score
Technology areasG03G
Top patents by PatentIndex Score
12 records- 0197US6360068B1Electrophotographic image formation process and apparatusFUJITSU LTD·Filed 2000·Granted Mar 19, 2002·135 cites·24 claims
- 0297US4762763AToner for developing electrostatic latent imageRICOH KK·Filed 1986·Granted Aug 9, 1988·79 cites·18 claims
- 0395US6416914B1Image formation process and developer used thereinFUJITSU LTD·Filed 2000·Granted Jul 9, 2002·62 cites·25 claims
- 0495US6168894B1Image forming method and dry toner thereforRICOH KK·Filed 1996·Granted Jan 2, 2001·79 cites·40 claims
- 0591US6855468B1Color image formation methodFUJITSU LTD·Filed 2000·Granted Feb 15, 2005·40 cites·10 claims
- 0690US5164774ADeveloping device of the type forming thin layer of toner on toner conveying member, and dry color toner of one component type used thereinRICOH KK·Filed 1988·Granted Nov 17, 1992·37 cites·24 claims
- 0781US5527657AOne-component magnetic toner for use in electrophotographyRICOH KK·Filed 1994·Granted Jun 18, 1996·25 cites·3 claims
- 0879US7090955B2Black toner, image forming method and image forming apparatus using the tonerRICOH KK·Filed 2005·Granted Aug 15, 2006·5 cites·17 claims
- 0970US4670368AMagnetic developer for developing latent electrostatic imagesRICOH KK·Filed 1986·Granted Jun 2, 1987·16 cites·10 claims
- 1067US6969574B1Black toner, image forming method and image forming apparatus using the tonerRICOH KK·Filed 2003·Granted Nov 29, 2005·9 cites·16 claims
- 1166US4401740AElectrographic development processRICOH KK·Filed 1982·Granted Aug 30, 1983·14 cites·10 claims
- 1265US6821699B2Toner, image forming method and apparatus using the toner, and container containing the tonerRICOH KK·Filed 2002·Granted Nov 23, 2004·9 cites·13 claims
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