Inventor · disambiguated record
Ryoichi Koizumi
Also filed as: KOIZUMI RYOICHI
20 granted patents·691 citations·filing 1990–2008
96Inventor score
Files withCANON KK20
Top patents by PatentIndex Score
20 records- 0196US5175565AInk jet substrate including plural temperature sensors and heatersCANON KK·Filed 1991·Granted Dec 29, 1992·133 cites·15 claims
- 0291US5491505AInk jet recording head and apparatus having a protective member formed above energy generators for generating energy used to discharge inkCANON KK·Filed 1994·Granted Feb 13, 1996·75 cites·13 claims
- 0389US6234599B1Substrate having a built-in temperature detecting element, and ink jet apparatus having the sameCANON KK·Filed 1994·Granted May 22, 2001·53 cites·19 claims
- 0488US7967413B2Liquid ejection head and liquid ejection methodCANON KK·Filed 2008·Granted Jun 28, 2011·9 cites·2 claims
- 0584US5043748ARecording apparatusCANON KK·Filed 1990·Granted Aug 27, 1991·83 cites·9 claims
- 0683US5760797AInk jet recording head with adjustable temperature sensor and ink jet recording system having the sameCANON KK·Filed 1994·Granted Jun 2, 1998·47 cites·27 claims
- 0782US5485182ALiquid jet recording apparatusCANON KK·Filed 1994·Granted Jan 16, 1996·45 cites·31 claims
- 0877US6074041AInk jet recording head having an electric discharge path for releasing static electricity and recording apparatus using sameCANON KK·Filed 1994·Granted Jun 13, 2000·34 cites·8 claims
- 0976US5638097ARecording apparatus to which recording head is detachably mountedCANON KK·Filed 1993·Granted Jun 10, 1997·34 cites·30 claims
- 1075US6505907B2Recording apparatus having abnormality determination based on temperature and average ejection duty cycleCANON KK·Filed 2002·Granted Jan 14, 2003·12 cites·8 claims
- 1174US5790140APrinting head, and printer and printing method using the printing headCANON KK·Filed 1995·Granted Aug 4, 1998·32 cites·29 claims
- 1273US5212503ALiquid jet recording head having a substrate with minimized electrode overlapCANON KK·Filed 1991·Granted May 18, 1993·29 cites·48 claims
- 1371US6598952B2Liquid jet recording head having controller for controlling temperature distributionCANON KK·Filed 2000·Granted Jul 29, 2003·10 cites·18 claims
- 1470US5488395ALiquid jet recording apparatusCANON KK·Filed 1994·Granted Jan 30, 1996·25 cites·48 claims
- 1567US5329304ARemaining ink detecting device and ink jet head cartridgeCANON KK·Filed 1992·Granted Jul 12, 1994·22 cites·23 claims
- 1665US5696543ARecording head which detects temperature of an element chip and corrects for variations in that detected temperature, and cartridge and apparatus having such a headCANON KK·Filed 1994·Granted Dec 9, 1997·19 cites·31 claims
- 1757US5017948AInk jet recording device with thermal energy adjustmentCANON KK·Filed 1990·Granted May 21, 1991·13 cites·29 claims
- 1855US5774147ASubstrate having a common collector region and being usable in a liquid jet recording headCANON KK·Filed 1993·Granted Jun 30, 1998·12 cites·49 claims
- 1935US5570119AMultilayer device having integral functional element for use with an ink jet recording apparatus, and recording apparatusCANON KK·Filed 1994·Granted Oct 29, 1996·2 cites·11 claims
- 2033US5726696AInk jet recording head having reserve functional devicesCANON KK·Filed 1997·Granted Mar 10, 1998·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →