Assignee
Inventors
- Hisanori Miyagaki (9 patents)
- Katsuhito Shimizu (15 patents)
- Haruya Tobita (3 patents)
- Atsushi Takita (11 patents)
- Tooru Kimura (19 patents)
- Akira Sugano (15 patents)
- Masayuki Kikuchi (47 patents)
- Masayuki Fukai (31 patents)
US Patent 4942514 · Granted Jul 17, 1990