Assignee
Inventors
- Fumio Takeda (29 patents)
- Yoshio Kojima (37 patents)
- Yutaka Ishibashi (35 patents)
- Isako Tsushima (8 patents)
- Kenji Sugimoto (51 patents)
- Hideo Tanaka (202 patents)
- Hidetoshi Takahashi (23 patents)
- Fumio Sumiyoshi (1 patents)
US Patent 5386670 · Granted Feb 7, 1995