Assignee
Inventors
- Seiji Itoyama (9 patents)
- Kichio Tada (1 patents)
- Tsukasa Telashima (1 patents)
- Shuji Tanaka (121 patents)
- Hiromitsu Yamanaka (7 patents)
- Takao Yunde (3 patents)
- Hiroaki Iguchi (10 patents)
- Nagayasu Bessho (18 patents)
US Patent 4949777 · Granted Aug 21, 1990