Assignee
Inventors
- Hiroaki Saikatsu (11 patents)
- Hisao Okamoto (19 patents)
- Mitsuo Yamazaki (36 patents)
- Shigeru Sakamoto (110 patents)
- Shiro Yamamiya (4 patents)
- Yoshio Abe (53 patents)
- Michiei Nakamura (42 patents)
US Patent 5961711 · Granted Oct 5, 1999