Assignee
Inventors
- Itsuo Takanashi (121 patents)
- Hideshi Tanaka (36 patents)
- Terumi Ohara (15 patents)
- Shigeru Kato (88 patents)
- Toshinori Takahashi (42 patents)
- Tsutomu Kiuchi (6 patents)
- Hiroki Kitamura (32 patents)
US Patent 4590490 · Granted May 20, 1986