Assignee
Inventors
- Toshio Nakayama (56 patents)
- Hiromi Shirai (2 patents)
- Makoto Kobayashi (548 patents)
- Mitsugi Suehiro (5 patents)
- Toru Seto (11 patents)
- Shigeaki Mitsuoka (34 patents)
- Kenji Inoue (192 patents)
US Patent 5154900 · Granted Oct 13, 1992