Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7101603 | Key top plate | Tatsuya Okamura, Yasuo Kojima, Atsushi Hari, Shinji Mizuno | 2006-09-05 |
| 6958183 | Key top plate and a method for manufacturing the same | Tatsuya Okamura, Yasuo Kojima, Atsushi Hari, Shinji Mizuno | 2005-10-25 |