Inventor · disambiguated record
Chang Junhua
Also filed as: JUNHUA CHANG
10 granted patents·139 citations·filing 2002–2006
89Inventor score
Files withSEIKO EPSON CORP10
Top patents by PatentIndex Score
10 records- 0189US6685293B2Liquid jetting apparatus and method of driving the sameSEIKO EPSON CORP·Filed 2002·Granted Feb 3, 2004·39 cites·16 claims
- 0284US7152290B2Methods of manufacturing a piezoelectric actuator and a liquid jetting headSEIKO EPSON CORP·Filed 2003·Granted Dec 26, 2006·31 cites·3 claims
- 0378US6949869B2Piezoelectric actuator, liquid jetting head incorporating the same, piezoelectric element, and method of manufacturing the sameSEIKO EPSON CORP·Filed 2003·Granted Sep 27, 2005·19 cites·16 claims
- 0478US6779866B2Liquid jetting apparatus and method for driving the sameSEIKO EPSON CORP·Filed 2002·Granted Aug 24, 2004·19 cites·12 claims
- 0572US6997547B2Piezoelectric element, piezoelectric actuator and liquid jetting head incorporating the sameSEIKO EPSON CORP·Filed 2003·Granted Feb 14, 2006·14 cites·6 claims
- 0660US6918659B2Piezoelectric element, piezoelectric actuator and liquid ejection head incorporating the sameSEIKO EPSON CORP·Filed 2003·Granted Jul 19, 2005·8 cites·5 claims
- 0753US7114797B2Actuator device, liquid ejection head, and method of inspecting the sameSEIKO EPSON CORP·Filed 2003·Granted Oct 3, 2006·4 cites·21 claims
- 0852US6803703B2Piezoelectric actuator, liquid jetting head incorporating the same, and method of manufacturing the actuator and headSEIKO EPSON CORP·Filed 2003·Granted Oct 12, 2004·5 cites·6 claims
- 0948US7210770B2Actuator device, liquid ejection head, and method of inspecting the sameSEIKO EPSON CORP·Filed 2005·Granted May 1, 2007·0 cites·5 claims
- 1048US7207664B2Actuator device, liquid ejection head, and method of inspecting the sameSEIKO EPSON CORP·Filed 2006·Granted Apr 24, 2007·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →