Assignee
Inventors
- Hiroyuki Yamada (357 patents)
- Kenji Suzuki (825 patents)
- Koichi Takagi (20 patents)
- Takashi Shigematsu (75 patents)
- Mikio Ishihara (43 patents)
- Jun Yamakawa (16 patents)
- Shinji Nagasawa (39 patents)
US Patent 5631985 · Granted May 20, 1997