Assignee
Inventors
- Kazuo Yamaguchi (17 patents)
- Akiko Saito (13 patents)
- Susumu Sekine (20 patents)
- Moriyuki Sato (25 patents)
- Seiga Itoh (24 patents)
- Kunikatsu Shirahata (32 patents)
- Tetsuya Hirano (1 patents)
- Hiroshi Kawauchi (14 patents)
US Patent 4894362 · Granted Jan 16, 1990