Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6967056 | Key sheet | — | 2005-11-22 |
| 6713698 | Key top and method of manufacture | — | 2004-03-30 |
| 6659666 | Key top assembly integrated with a film | — | 2003-12-09 |
| 6607812 | Key sheet | Masaya Katori | 2003-08-19 |
| 6455796 | Film integrated key top | — | 2002-09-24 |
| 5820809 | Manufacturing method for key tops | Hiroshi Yajima, Akihiro Tsuji, Masaru Nakajo, Motoshi Yamauchi, Nobuaki Oji | 1998-10-13 |