Assignee
Inventors
- Minoru Otsuka (5 patents)
- Kazuto Naganuma (3 patents)
- Keiji Maruta (8 patents)
- Akihiro Yamada (141 patents)
- Kazuyuki Takizawa (30 patents)
- Shigeru Miyazaki (15 patents)
- Hideki Okii (5 patents)
- Hiroshi Orikawa (2 patents)
US Patent 4773057 · Granted Sep 20, 1988