Assignee
Inventors
- Takashi Yonekawa (21 patents)
- Shuuichi Buma (86 patents)
- Toshio Aburaya (23 patents)
- Kunihito Sato (34 patents)
- Masaki Kawanishi (27 patents)
- Toshiaki Hamada (22 patents)
- Shinichi Tagawa (9 patents)
US Patent 5069475 · Granted Dec 3, 1991