Assignee
Inventors
- Yasushi Yamada (87 patents)
- Tsuyoshi Mizubata (25 patents)
- Masaru Ushio (56 patents)
- Osamu Murata (23 patents)
- Tomoya Motoyoshi (9 patents)
- Yoshikazu Maekawa (25 patents)
- Masanobu Kawano (17 patents)
US Patent 5212517 · Granted May 18, 1993