Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6633631 | Digital key telephone system and extension terminal device thereof | Toshiaki Tanaka, Setsuo Kimura, Yoshihito Nagano, Masayuki Tsurusaki, Takashi Watanabe +4 more | 2003-10-14 |
| 6545255 | Induction heating apparatus for heating image formed on recording material | Takashi Sato, Hajime Sekiguchi | 2003-04-08 |
| 6531569 | Resin material for gas separation base and process for producing the same | Akira Tachiki, Kenji Haraya | 2003-03-11 |