Assignee
Inventors
- Kazuhiko Ueda (134 patents)
- Hiroyuki Oda (118 patents)
- Kazuhiko Hashimoto (80 patents)
- Kouichi Hatamura (14 patents)
- Tsuyoshi Goto (31 patents)
- Takashi Ohtsuru (2 patents)
- Shigeo Tabata (2 patents)
US Patent 5058558 · Granted Oct 22, 1991