Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9040431 | Method for processing silicon wafer | Hirohisa Fujita, Shuji Koyama, Keiji Matsumoto | 2015-05-26 |
| 8951815 | Method for producing liquid-discharge-head substrate | Ryotaro Murakami, Shuji Koyama, Keisuke Kishimoto | 2015-02-10 |
| 8858812 | Processing method for an ink jet head substrate | Keiji Matsumoto, Keisuke Kishimoto, Kazuhiro Asai, Shuji Koyama | 2014-10-14 |
| 8771531 | Method of producing substrate for liquid ejection head | Shuji Koyama, Hiroyuki Abo, Taichi Yonemoto | 2014-07-08 |
| 8492281 | Liquid composition, method of producing silicon substrate, and method of producing liquid discharge head substrate | Hiroyuki Abo, Taichi Yonemoto, Shuji Koyama, Keisuke Kishimoto | 2013-07-23 |
| 8429820 | Method of manufacturing liquid discharge head | Shuji Koyama, Sakai Yokoyama, Kenji Fujii, Jun Yamamuro, Keiji Matsumoto +3 more | 2013-04-30 |