Inventor · disambiguated record
Fumio Murooka
Also filed as: MUROOKA FUMIO
19 granted patents·537 citations·filing 1988–2005
96Inventor score
Top patents by PatentIndex Score
19 records- 0197US5731828AInk jet head, ink jet head cartridge and ink jet apparatusCANON KK·Filed 1995·Granted Mar 24, 1998·121 cites·16 claims
- 0291US7350891B2Liquid discharge headCANON KK·Filed 2005·Granted Apr 1, 2008·13 cites·4 claims
- 0388US6467884B1Substrate unit for liquid discharging head, method for producing the same, liquid discharging head, cartridge, and image forming apparatusCANON KK·Filed 2000·Granted Oct 22, 2002·33 cites·25 claims
- 0488US6243109B1Print head with driving, transmission and control devices on single substrateCANON KK·Filed 1997·Granted Jun 5, 2001·54 cites·99 claims
- 0587US6224195B1Recording head and recording apparatus using the sameCANON KK·Filed 1996·Granted May 1, 2001·49 cites·24 claims
- 0686US5880762AInk jet head with preliminary heater elementCANON KK·Filed 1997·Granted Mar 9, 1999·41 cites·5 claims
- 0784US6471339B1Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording headCANON KK·Filed 2000·Granted Oct 29, 2002·21 cites·40 claims
- 0883US7250113B2Method for manufacturing liquid ejection headCANON KK·Filed 2004·Granted Jul 31, 2007·24 cites·9 claims
- 0983US5602576AInk-jet type recording head and monolithic integrated circuit suitable therforCANON KK·Filed 1996·Granted Feb 11, 1997·50 cites·4 claims
- 1079US5943070ASubstrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording headCANON KK·Filed 1994·Granted Aug 24, 1999·31 cites·14 claims
- 1173US6520611B2Print head and printer apparatus using the sameCANON KK·Filed 2001·Granted Feb 18, 2003·12 cites·8 claims
- 1272US4982192ADigital-to-analog converter having common adjustment meansCANON KK·Filed 1988·Granted Jan 1, 1991·24 cites·17 claims
- 1366US6439690B2Element substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatusCANON KK·Filed 2001·Granted Aug 27, 2002·8 cites·24 claims
- 1460US6464320B1Recording head and recording apparatus using the sameCANON KK·Filed 2000·Granted Oct 15, 2002·6 cites·38 claims
- 1558US5614439AMethod of making a planar wiring in an insulated groove using alkylaluminum hydrideCANON KK·Filed 1995·Granted Mar 25, 1997·23 cites·13 claims
- 1657US6257695B1Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving record headCANON KK·Filed 1999·Granted Jul 10, 2001·12 cites·11 claims
- 1741US5877784APrinthead, printing apparatus and printing method using printheadCANON KK·Filed 1995·Granted Mar 2, 1999·9 cites·28 claims
- 1837US5355099ASignal generating deviceCANON KK·Filed 1992·Granted Oct 11, 1994·4 cites·5 claims
- 1925US5301307AMicroprocessor having waiting functionSHARP KK·Filed 1992·Granted Apr 5, 1994·2 cites·3 claims
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