Assignee
Inventors
- Takao Minami (11 patents)
- Hiroo Nagano (9 patents)
- Kazuo Yamanaka (6 patents)
- Yasutaka Okada (47 patents)
- Hiroshi Susukida (4 patents)
- Kichiro Onimura (3 patents)
- Toshio Yonezawa (53 patents)
- Nobuya Sasaguri (3 patents)
US Patent 4715909 · Granted Dec 29, 1987