Assignee
Inventors
- Michiko Yonemura (1 patents)
- Tadao Sekine (1 patents)
- Yoshimichi Kiyozumi (8 patents)
- Kunio Suzuki (70 patents)
- Kunio Uchida (5 patents)
- Fumikazu Ikazaki (5 patents)
- Shigemitsu Shin (6 patents)
US Patent 4981824 · Granted Jan 1, 1991