Inventor · disambiguated record
Takuro Isayama
Also filed as: FUKAZAWA TAKAO · ISAYAMA TAKURO
20 granted patents·950 citations·filing 1975–1986
97Inventor score
Files withRICOH KK20
Top patents by PatentIndex Score
20 records- 0198US4301459AInk ejection apparatus comprising entrained air removal meansRICOH KK·Filed 1979·Granted Nov 17, 1981·98 cites·11 claims
- 0298US4045802AInk ejection printing apparatus comprising automatically actuated ejection orifice capRICOH KK·Filed 1976·Granted Aug 30, 1977·129 cites·15 claims
- 0397US4296418AInk jet printing apparatus with reverse solvent flushing meansRICOH KK·Filed 1980·Granted Oct 20, 1981·108 cites·6 claims
- 0497US4034380AInk ejection apparatus for printerRICOH KK·Filed 1976·Granted Jul 5, 1977·67 cites·8 claims
- 0595US4673955AInk receptacle for ink jet printerRICOH KK·Filed 1986·Granted Jun 16, 1987·87 cites·15 claims
- 0692US4591883AInk-jet printer headRICOH KK·Filed 1985·Granted May 27, 1986·65 cites·14 claims
- 0792US4586058AInk jet printing apparatusRICOH KK·Filed 1984·Granted Apr 29, 1986·57 cites·11 claims
- 0890US4050078AAutomatic nozzle cleaning system for ink ejection printerRICOH KK·Filed 1975·Granted Sep 20, 1977·42 cites·9 claims
- 0988US4518974AInk jet air removal systemRICOH KK·Filed 1982·Granted May 21, 1985·42 cites·12 claims
- 1088US4183029AInk filter clogging sensor and indicatorRICOH KK·Filed 1978·Granted Jan 8, 1980·45 cites·10 claims
- 1186US4245224ADrive circuit for ink jet discharging headRICOH KK·Filed 1978·Granted Jan 13, 1981·34 cites·2 claims
- 1285US4178597AColor ink jet printing apparatusRICOH KK·Filed 1978·Granted Dec 11, 1979·25 cites·6 claims
- 1383US4293867ADevice for removing air bubbles formed and trapped in ink chamber of print head of ink-jet printerRICOH KK·Filed 1980·Granted Oct 6, 1981·28 cites·1 claims
- 1482US4222060AInk jet printing apparatusRICOH KK·Filed 1978·Granted Sep 9, 1980·26 cites·8 claims
- 1580US4510509AInk ejection headRICOH KK·Filed 1983·Granted Apr 9, 1985·25 cites·5 claims
- 1676US4300144AMultiple-nozzle ink-jet recording apparatusRICOH KK·Filed 1979·Granted Nov 10, 1981·19 cites·3 claims
- 1774US4184168AInk-on-demand type ink jet head driving circuitRICOH KK·Filed 1978·Granted Jan 15, 1980·18 cites·4 claims
- 1870US4554556AColor plotterRICOH KK·Filed 1983·Granted Nov 19, 1985·18 cites·10 claims
- 1964US4559544AMulti-nozzle head for ink on-demand type ink jet printerRICOH KK·Filed 1984·Granted Dec 17, 1985·13 cites·15 claims
- 2044US4271366AAnalog signal delay circuitRICOH KK·Filed 1979·Granted Jun 2, 1981·4 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →