Assignee
Inventors
- Tadao Yamamoto (22 patents)
- Tetsuya Abe (231 patents)
- Masaaki Dohi (3 patents)
- Shinichi Hisatomi (6 patents)
- Mitsugu Oishi (3 patents)
- Toshiro Honda (7 patents)
- Unknown
- Takeo Hirono (2 patents)
US Patent 5073468 · Granted Dec 17, 1991