Assignee
Inventors
- Nobutoshi Sagawa (16 patents)
- Mikio Nagasawa (5 patents)
- Sigeo Ihara (14 patents)
- Katsuro Kikuchi (12 patents)
- Masahiko Hirao (8 patents)
- Kirin Ka (1 patents)
- Satoshi Itoh (70 patents)
- Yoshio Suzuki (222 patents)
US Patent 5963731 · Granted Oct 5, 1999