Assignee
Inventors
- Mitsuru Nagasawa (14 patents)
- Kazuyuki Kuwano (7 patents)
- Takeshi Kawakami (25 patents)
- Mamoru Sugiura (10 patents)
- Hiroshi Hibino (2 patents)
- Shiro Kojima (8 patents)
- Kishiro Azuma (8 patents)
US Patent 5618898 · Granted Apr 8, 1997