Assignee
Inventors
- Kouji Tsukada (17 patents)
- Hidekazu Nishigaki (7 patents)
- Yasuaki Ikeda (1 patents)
- Shigeru Sakuma (17 patents)
- Shin-ichi Ishiyama (2 patents)
- Fumio Matsuoka (28 patents)
- Yoshihisa Kanno (27 patents)
- Shigeki Hayashi (115 patents)
US Patent 5665922 · Granted Sep 9, 1997