Assignee
Inventors
- Sakumi Hasetoh (8 patents)
- Osamu Kameda (34 patents)
- Junichi Okita (14 patents)
- Ichiro Hirose (24 patents)
- Yoshimichi Tanaka (9 patents)
- Akie Kondo (1 patents)
- Hitoshi Akutagawa (14 patents)
US Patent 5251720 · Granted Oct 12, 1993