Assignee
Inventors
- Yasuko Maruo (9 patents)
- Shigekuni Sasaki (15 patents)
- Toshiaki Tamamura (18 patents)
- Tohru Matsuura (21 patents)
- Shinji Ando (34 patents)
- Shinsuke Matsui (5 patents)
- Fumio Yamamoto (27 patents)
US Patent 5598501 · Granted Jan 28, 1997