Inventor · disambiguated record
Toshio Kumakura
Also filed as: KUMAKURA TOSHIO · MORI YASUKI
5 granted patents·76 citations·filing 1977–1988
80Inventor score
Technology areasG03G
Top patents by PatentIndex Score
5 records- 0192US4342282AToner cartridgeHITACHI METALS LTD·Filed 1981·Granted Aug 3, 1982·46 cites·2 claims
- 0272US4189390AOne-component magnetic developer powder for developing electrostatic latent image and method of making sameHITACHI METALS LTD·Filed 1977·Granted Feb 19, 1980·14 cites·13 claims
- 0343US4865936AElectrophotographic reversal development method using magnetic field and specified development gapHITACHI METALS LTD·Filed 1988·Granted Sep 12, 1989·6 cites·8 claims
- 0439US4482623APreparation method of magnetic tonerHITACHI METALS LTD·Filed 1981·Granted Nov 13, 1984·5 cites·9 claims
- 0535US4554232AMagnetic tonerTABARU KAZUNORI·Filed 1980·Granted Nov 19, 1985·5 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Toshio Kumakura 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 →