Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720508 | Door switches | Hiroyuki Moriyama, Shingo Akiyama, Takashi Niwa, Sueaki Honda, Minoru Yoshii +3 more | 2004-04-13 |
| 6483053 | Lock switch apparatus | Hidemitu Takenaka, Yoshihito Koshiba, Mitumi Kobayashi, Masaharu Hibi | 2002-11-19 |
| 6459052 | Key unit and switch body and door switch using the same | Takashi Niwa, Hidemitsu Takenaka, Yasuo Isa | 2002-10-01 |
| 6307167 | Key switch | Takashi Niwa | 2001-10-23 |