Assignee
Inventors
- Hiromi Takada (15 patents)
- Takami Suzuki (15 patents)
- Toshio Shiina (6 patents)
- Keiji Okamoto (94 patents)
- Takeshi Komurasaki (6 patents)
- Satoru Yoshioka (9 patents)
- Nobuo Sakuma (43 patents)
- Tadashi Matsuura (2 patents)
US Patent 4943128 · Granted Jul 24, 1990