Assignee
Inventors
- Tadatoshi Yamada (24 patents)
- Takeo Kawaguchi (24 patents)
- Tetuya Matuda (1 patents)
- Toshie Takeuchi (15 patents)
- Ituo Kodera (1 patents)
- Shunji Yamamoto (11 patents)
- Shirou Nakamura (5 patents)
US Patent 5625331 · Granted Apr 29, 1997