Assignee
Inventors
- Masanobu Abe (12 patents)
- Takeshi Okubo (35 patents)
- Carl David Walton (1 patents)
- Unknown
- Yasuhiko Shoji (11 patents)
- Tetsuo Hata (4 patents)
- Masakazu Hirayama (3 patents)
- Takeshi Kyogane (8 patents)
US Patent 5725966 · Granted Mar 10, 1998