Assignee
Inventors
- Yasushi Joh (19 patents)
- Akihiko Niina (3 patents)
- Noriaki Kaneko (13 patents)
- Toshio Sano (8 patents)
- Noriyuki Ichige (1 patents)
- Koji Ichikawa (250 patents)
- Akira Fukutome (2 patents)
- Hisako Sonobe (1 patents)
US Patent 4284594 · Granted Aug 18, 1981