Assignee
Inventors
- Eiji Koketsu (4 patents)
- Koki Sato (111 patents)
- Tetsushi Muromachi (11 patents)
- Mutsumu Haraoka (5 patents)
- Toshio Nagata (31 patents)
- Michihiro Yanagihara (1 patents)
- Kuniaki Oma (1 patents)
US Patent 5547223 · Granted Aug 20, 1996