Assignee
Inventors
- Masaki Sugimoto (23 patents)
- Nobuteru Hitomi (5 patents)
- Kenji Ikeura (32 patents)
- Hiroyuki Hirano (133 patents)
- Kunihiko Morikawa (11 patents)
- Hisashi Kitahara (4 patents)
- Kazuhiro Takatori (17 patents)
US Patent 4887461 · Granted Dec 19, 1989