Assignee
Inventors
- Takeyoshi Nishio (42 patents)
- Toshio Yokoi (8 patents)
- Takao Nomura (58 patents)
- Kouhei Ueno (12 patents)
- Tomohiko Akagawa (20 patents)
- Ikunori Sakai (21 patents)
- Yasufumi Takasaki (2 patents)
US Patent 4988764 · Granted Jan 29, 1991