Inventor · disambiguated record
Sakai Yokoyama
Also filed as: YOKOYAMA SAKAI
28 granted patents·2 pending applications·345 citations·filing 1990–2012
97Inventor score
Top patents by PatentIndex Score
30 records- 0197US8123330B2Circuit board for ink jet head, ink jet head having the same, method for cleaning the head and ink jet printing apparatus using the headSAKAI TOSHIYASU·Filed 2011·Granted Feb 28, 2012·19 cites·5 claims
- 0296US8491087B2Circuit board for ink jet head, ink jet head having the same, method for cleaning the head and ink jet printing apparatus using the headSAKAI TOSHIYASU·Filed 2012·Granted Jul 23, 2013·15 cites·19 claims
- 0396US7950769B2Circuit board for ink jet head, ink jet head having the same, method for cleaning the head and ink jet printing apparatus using the headCANON KK·Filed 2006·Granted May 31, 2011·21 cites·18 claims
- 0492US8429820B2Method of manufacturing liquid discharge headKOYAMA SHUJI·Filed 2011·Granted Apr 30, 2013·11 cites·13 claims
- 0592US8129204B2Liquid discharge head substrate, liquid discharge head using the substrate, and manufacturing method thereforSAITO ICHIRO·Filed 2010·Granted Mar 6, 2012·8 cites·4 claims
- 0691US5491505AInk 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
- 0790US7591071B2Manufacturing Method of Semiconductive Element and Ink Jet Head SubstrateCANON KK·Filed 2006·Granted Sep 22, 2009·22 cites·4 claims
- 0890US7374275B2Ink jet head circuit board with heaters and electrodes constructed to reduce corrosion, method of manufacturing the same and ink jet head using the sameCANON KK·Filed 2005·Granted May 20, 2008·10 cites·18 claims
- 0989US5081474ARecording head having multi-layer matrix wiringCANON KK·Filed 1990·Granted Jan 14, 1992·66 cites·65 claims
- 1088US7681993B2Circuit board for ink jet head, method of manufacturing the same, and ink jet head using the sameCANON KK·Filed 2005·Granted Mar 23, 2010·10 cites·3 claims
- 1187US7954238B2Method of manufacturing ink jet circuit board with heaters and electrodes constructed to reduce corrosionCANON KK·Filed 2008·Granted Jun 7, 2011·7 cites·17 claims
- 1286US7857429B2Ink jet recording head and manufacturing method of ink jet recording headCANON KK·Filed 2006·Granted Dec 28, 2010·7 cites·6 claims
- 1386US7712875B2Base member for liquid discharge head, liquid discharge head utilizing the same, and producing method thereforCANON KK·Filed 2007·Granted May 11, 2010·8 cites·17 claims
- 1486US7566116B2Ink jet head circuit board, method of manufacturing the same and ink jet head using the sameCANON KK·Filed 2005·Granted Jul 28, 2009·8 cites·5 claims
- 1585US7862155B2Ink jet head circuit board, method of manufacturing the same and ink jet head using the sameCANON KK·Filed 2005·Granted Jan 4, 2011·8 cites·5 claims
- 1685US7641316B2Ink jet head circuit board, method of manufacturing the same and ink jet head using the sameCANON KK·Filed 2005·Granted Jan 5, 2010·8 cites·6 claims
- 1779US7533969B2Ink jet print head substrate, ink jet print head, ink jet printing apparatus, and method of manufacturing ink jet print head substrateCANON KK·Filed 2006·Granted May 19, 2009·4 cites·18 claims
- 1874US7338150B2Substrate for liquid discharge head, liquid discharge head using substrate for liquid discharge head and method of manufacturing the sameCANON KK·Filed 2007·Granted Mar 4, 2008·3 cites·7 claims
- 1973US7472975B2Substrate for ink jet printing head, ink jet printing head, ink jet printing apparatus, and method of blowing fuse element of ink jet printing headCANON KK·Filed 2006·Granted Jan 6, 2009·3 cites·2 claims
- 2071US7306327B2Substrate for ink jet head, ink jet head using the same, and manufacturing method thereofCANON KK·Filed 2003·Granted Dec 11, 2007·12 cites·8 claims
- 2170US7255426B2Substrate for liquid discharge head, liquid discharge head using substrate for liquid discharge head and method of manufacturing the sameCANON KK·Filed 2004·Granted Aug 14, 2007·10 cites·19 claims
- 2269US7798595B2Substrate for ink jet printing head, ink jet printing head, ink jet printing apparatus, and method of blowing fuse element of ink jet printing headCANON KK·Filed 2008·Granted Sep 21, 2010·2 cites·9 claims
- 2365US7967421B2Ink jet print head and method for manufacturing ink jet print headCANON KK·Filed 2007·Granted Jun 28, 2011·2 cites·6 claims
- 2463US8079675B2Ink jet recording head and manufacturing method of ink jet recording headOZAKI TERUO·Filed 2010·Granted Dec 20, 2011·1 cites·4 claims
- 2561US7669981B2Ink jet print head substrate, ink jet print head, ink jet printing apparatus, and method of manufacturing ink jet print head substrateCANON KK·Filed 2009·Granted Mar 2, 2010·1 cites·11 claims
- 2649US2007252873A1Liquid discharge head substrate, liquid discharge head using the substrate, and manufacturing method thereforCANON KK·Filed 2007·Application pending·0 cites
- 2748US7055937B2Heat generating resistant element film, substrate for ink jet head utilizing the same, ink jet head and ink jet apparatusCANON KK·Filed 2003·Granted Jun 6, 2006·3 cites·6 claims
- 2843US8904639B2Method of producing liquid ejection headMATSUMOTO KEIJI·Filed 2011·Granted Dec 9, 2014·0 cites·8 claims
- 2943US2010079551A1Substrate for liquid discharge head, method of manufacturing the same, and liquid discharge head using such substrateCANON KK·Filed 2008·Application pending·0 cites
- 3042US7393084B2Substrate for ink jet head with TaCr alloy protective layer, ink jet head utilizing the same and producing method thereforCANON KK·Filed 2003·Granted Jul 1, 2008·1 cites·33 claims
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