Assignee
Inventors
- Toyohiko Okina (4 patents)
- Hiroshi Goto (228 patents)
- Fumio Kousaka (2 patents)
- Akinori Teranishi (3 patents)
- Satoshi Kawabata (5 patents)
- Tetsuo Ohyama (5 patents)
- Makoto Ohya (2 patents)
- Norio Kozaki (2 patents)
US Patent 4871612 · Granted Oct 3, 1989