Assignee
Inventors
- Masaru Shida (10 patents)
- Akira Ezawa (33 patents)
- Tsutomu Wakabayashi (65 patents)
- Kimio Uematsu (22 patents)
- Keiji Ohsawa (17 patents)
- Shinichi Tsukada (20 patents)
- Toshihiro Sato (293 patents)
US Patent 5361119 · Granted Nov 1, 1994