Assignee
Inventors
- Yoshiaki Inoue (93 patents)
- Akira Shirai (64 patents)
- Yoshihisa Nomura (73 patents)
- Kazumasa Nakamura (41 patents)
- Takafumi Inagaki (31 patents)
- Harumasa Minegishi (4 patents)
- Kiyotaka Ise (11 patents)
US Patent 4765691 · Granted Aug 23, 1988