Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846859 | Air cleaner | Koji Nobiraki, Hisato Uragami, Toshitaka Tamaki, Keiji Yoshimura, Kazuhiko Otsuka | 1989-07-11 |
| 4790863 | Air cleaner | Koji Nobiraki, Hisato Uragami, Toshitaka Tamaki, Keiji Yoshimura, Kazihiko Otsuka | 1988-12-13 |