Assignee
Inventors
- Hiroshi Yamauchi (17 patents)
- Isao Sugiyama (24 patents)
- Isao Saito (78 patents)
- Seiichiro Nomoto (32 patents)
- Takashi Kamiya (53 patents)
- Yoshimasa Machida (42 patents)
- Shigeto Negi (38 patents)
US Patent 5010188 · Granted Apr 23, 1991