Assignee
Inventors
- Kenichi Terai (23 patents)
- Shuji Saiki (70 patents)
- Kousaku Murata (22 patents)
- Katsuaki Satoh (9 patents)
- Yoichi Kumura (1 patents)
- Yasutoshi Nakama (13 patents)
- Michiko Ogawa (5 patents)
- Shuichi Obata (10 patents)
US Patent 4924962 · Granted May 15, 1990