Inventor · disambiguated record
Shuji Koyama
Also filed as: KOYAMA SHUJI
85 granted patents·6 pending applications·1,453 citations·filing 1990–2015
99Inventor score
Top patents by PatentIndex Score
91 records- 0197US7300596B2Method of manufacturing liquid discharge headCANON KK·Filed 2006·Granted Nov 27, 2007·39 cites·9 claims
- 0296US7287847B2Method of manufacturing ink jet recording head, ink jet recording head, and ink jet cartridgeCANON KK·Filed 2004·Granted Oct 30, 2007·59 cites·4 claims
- 0395US7523553B2Method of manufacturing ink jet recording headCANON KK·Filed 2007·Granted Apr 28, 2009·20 cites·5 claims
- 0495US6116714APrinting head, printing method and apparatus using same, and apparatus and method for correcting said printing headCANON KK·Filed 1995·Granted Sep 12, 2000·99 cites·41 claims
- 0594US6264302B1Detection of a discharge state of ink in an ink discharge recording headCANON KK·Filed 1999·Granted Jul 24, 2001·82 cites·10 claims
- 0693US7901064B2Ink jet recording head with ink filter formed of a plurality of stacked filmsCANON KK·Filed 2007·Granted Mar 8, 2011·18 cites·5 claims
- 0793US7727411B2Manufacturing method of substrate for ink jet head and manufacturing method of ink jet recording headCANON KK·Filed 2007·Granted Jun 1, 2010·16 cites·11 claims
- 0892US8429820B2Method of manufacturing liquid discharge headKOYAMA SHUJI·Filed 2011·Granted Apr 30, 2013·11 cites·13 claims
- 0991US7862158B2Method of manufacturing ink jet recording head, ink jet cartridgeCANON KK·Filed 2007·Granted Jan 4, 2011·10 cites·4 claims
- 1091US7475966B2Liquid discharge recording head and method for manufacturing sameCANON KK·Filed 2005·Granted Jan 13, 2009·14 cites·7 claims
- 1191US5491505AInk 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
- 1289US5081474ARecording head having multi-layer matrix wiringCANON KK·Filed 1990·Granted Jan 14, 1992·66 cites·65 claims
- 1387US6331050B1Liquid ejecting head and method in which a movable member is provided between flow paths, one path joining a common chamber and ejection orifice, the other, having a heat generating elementCANON KK·Filed 1996·Granted Dec 18, 2001·57 cites·118 claims
- 1487US5940957ALaser process for making a filter for an ink jetCANON KK·Filed 1995·Granted Aug 24, 1999·52 cites·17 claims
- 1586US8858812B2Processing method for an ink jet head substrateCANON KK·Filed 2012·Granted Oct 14, 2014·4 cites·14 claims
- 1686US7452474B2Method of manufacturing substrate for ink jet recording head and method of manufacturing recording head using substrate manufactured by this methodCANON KK·Filed 2005·Granted Nov 18, 2008·8 cites·54 claims
- 1786US6659588B2Liquid discharge head and producing method thereforCANON KK·Filed 2002·Granted Dec 9, 2003·26 cites·16 claims
- 1886US6074543AMethod for producing liquid ejecting headCANON KK·Filed 1996·Granted Jun 13, 2000·47 cites·2 claims
- 1986US5992984ALiquid discharging head, head cartridge and liquid discharge apparatusCANON KK·Filed 1997·Granted Nov 30, 1999·47 cites·58 claims
- 2085US6530650B2Ink jet head substrate, ink jet head, method for manufacturing ink jet head substrate, method for manufacturing ink jet head, method for using ink jet head and ink jet recording apparatusCANON KK·Filed 2001·Granted Mar 11, 2003·27 cites·21 claims
- 2185US5837057AFilm forming apparatus with particle prevention plateCANON KK·Filed 1996·Granted Nov 17, 1998·57 cites·7 claims
- 2284US6374482B1Method of manufacturing a liquid discharge headCANON KK·Filed 1998·Granted Apr 23, 2002·42 cites·4 claims
- 2383US7891784B2Liquid ejection head and method for manufacturing liquid ejection headCANON KK·Filed 2008·Granted Feb 22, 2011·6 cites·11 claims
- 2482US6447984B1Liquid discharge head, method of manufacture therefor and liquid discharge recording apparatusCANON KK·Filed 2000·Granted Sep 10, 2002·23 cites·55 claims
- 2581US8128204B2Liquid ejection head and method for manufacturing liquid ejection headOZAKI NORIYASU·Filed 2011·Granted Mar 6, 2012·4 cites·3 claims
- 2680US7753502B2Method of manufacturing ink jet recording head, ink jet recording head, and ink jet cartridgeCANON KK·Filed 2007·Granted Jul 13, 2010·4 cites·8 claims
- 2780US6834943B2Liquid discharge head, a substrate for use of such head and a method of manufacture thereforCANON KK·Filed 2002·Granted Dec 28, 2004·17 cites·11 claims
- 2880US6609783B1Ink jet recording head, method for producing the same and recording apparatus equipped with the sameCANON KK·Filed 1998·Granted Aug 26, 2003·40 cites·14 claims
- 2980US6527377B1Liquid discharge head and producing method thereforCANON KK·Filed 2000·Granted Mar 4, 2003·19 cites·4 claims
- 3080US5933163AInk jet recording apparatusCANON KK·Filed 1997·Granted Aug 3, 1999·39 cites·36 claims
- 3179US7930824B2Method of manufacturing ink jet recording headCANON KK·Filed 2009·Granted Apr 26, 2011·4 cites·7 claims
- 3278US6180018B1Ink jet printing head, manufacturing method therefor, and ink jet printing apparatusCANON KK·Filed 1997·Granted Jan 30, 2001·36 cites·30 claims
- 3376US7828419B2Ink jet recording head and method of manufacturing the sameCANON KK·Filed 2007·Granted Nov 9, 2010·4 cites·8 claims
- 3476US6422686B1Liquid discharge head and method of manufacturing the sameCANON KK·Filed 2000·Granted Jul 23, 2002·17 cites·28 claims
- 3575US8057017B2Ink jet recording head with ink supply ports having a cross-section with varying widthSAKAI TOSHIYASU·Filed 2010·Granted Nov 15, 2011·3 cites·3 claims
- 3673US7824560B2Manufacturing method for ink jet recording head chip, and manufacturing method for ink jet recording headCANON KK·Filed 2007·Granted Nov 2, 2010·4 cites·10 claims
- 3773US7322104B2Method for producing an ink jet headCANON KK·Filed 2005·Granted Jan 29, 2008·7 cites·7 claims
- 3872US5347713AMethod for manufacturing ink jet headCANON KK·Filed 1992·Granted Sep 20, 1994·28 cites·34 claims
- 3971US6752489B2Liquid ejection head and method of manufacturing the liquid ejection headCANON KK·Filed 2001·Granted Jun 22, 2004·13 cites·24 claims
- 4071US6409300B2Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing headCANON KK·Filed 1999·Granted Jun 25, 2002·21 cites·16 claims
- 4170US7255418B2Method for manufacturing liquid discharge head, substrate for liquid discharge head and method for working substrateCANON KK·Filed 2005·Granted Aug 14, 2007·2 cites·7 claims
- 4269US9421773B2Process for producing liquid ejection headCANON KK·Filed 2013·Granted Aug 23, 2016·1 cites·18 claims
- 4369US8492281B2Liquid composition, method of producing silicon substrate, and method of producing liquid discharge head substrateABO HIROYUKI·Filed 2012·Granted Jul 23, 2013·2 cites·4 claims
- 4469US8329047B2Method for producing liquid discharge headNAGAMI TADANOBU·Filed 2009·Granted Dec 11, 2012·4 cites·7 claims
- 4569US6858152B2Method for manufacturing liquid discharge head, substrate for liquid discharge head and method for working substrateCANON KK·Filed 2002·Granted Feb 22, 2005·9 cites·22 claims
- 4668US8753800B2Process for producing ejection orifice forming member and liquid ejection headCANON KK·Filed 2013·Granted Jun 17, 2014·1 cites·10 claims
- 4767USRE38710ELaser process for making a filter for an ink jetCANON KK·Filed 2001·Granted Mar 15, 2005·9 cites·18 claims
- 4867US6511162B1Liquid discharge head and method for manufacturing the sameCANON KK·Filed 2000·Granted Jan 28, 2003·11 cites·126 claims
- 4966US8377828B2Method of manufacturing a substrate for a liquid discharge headCANON KK·Filed 2010·Granted Feb 19, 2013·1 cites·9 claims
- 5066US6644790B2Ink-jet head substrate, ink-jet head and ink-jet recording apparatusCANON KK·Filed 2001·Granted Nov 11, 2003·10 cites·12 claims
Showing the top 50 of 91 patent records by PatentIndex Score.
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