Assignee
Inventors
- Masatoshi Gohbara (14 patents)
- Tamotsu Asano (9 patents)
- Shuji Ozawa (27 patents)
- Hideo Yamazaki (12 patents)
- Tsutomu Ishii (11 patents)
- Makoto Nishida (10 patents)
- Junko Watanabe (11 patents)
- Naoki Sato (11 patents)
US Patent 4986846 · Granted Jan 22, 1991