Assignee
Inventors
- Toru Degawa (6 patents)
- Gen Okuyama (6 patents)
- Akio Hashimoto (47 patents)
- Seiju Uchida (2 patents)
- Kouzou Fujiwara (2 patents)
- Makoto Ebata (8 patents)
- Takashi Satou (65 patents)
- Tohei Ototani (12 patents)
US Patent 4710481 · Granted Dec 1, 1987