Assignee
Inventors
- Yoshinari Miyamoto (15 patents)
- Osamu Yamada (181 patents)
- Mitsue Koizumi (10 patents)
- Osamu Komura (34 patents)
- Eiji Kamijo (24 patents)
- Masaaki Honda (30 patents)
- Akira Yamakawa (100 patents)
US Patent 4906295 · Granted Mar 6, 1990