Inventor · disambiguated record
Nachio Seko
Also filed as: SEKO NACHIO
7 granted patents·423 citations·filing 1974–1981
89Inventor score
Technology areasG03G
Files withRICOH KK7
Top patents by PatentIndex Score
7 records- 0198US4583834ACopying apparatusRICOH KK·Filed 1978·Granted Apr 22, 1986·192 cites·9 claims
- 0297US4167322AElectrostatic copying system having monitoring devicesRICOH KK·Filed 1978·Granted Sep 11, 1979·94 cites·10 claims
- 0392US4640608ACleaning method for use in electrophotographyRICOH KK·Filed 1981·Granted Feb 3, 1987·56 cites·2 claims
- 0491US4256401AImage density adjustment method and apparatusRICOH KK·Filed 1979·Granted Mar 17, 1981·32 cites·8 claims
- 0580US4203663AComputer controlled electrostatic copying machineRICOH KK·Filed 1978·Granted May 20, 1980·23 cites·11 claims
- 0672US3992089AReader-printer apparatus with multiple supply rolls and charging devicesRICOH KK·Filed 1975·Granted Nov 16, 1976·15 cites·17 claims
- 0768US3977778AElectrophotographic apparatusRICOH KK·Filed 1974·Granted Aug 31, 1976·11 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →