Assignee
Inventors
- Osamu Namikawa (9 patents)
- Yasuo Kikuchi (23 patents)
- Minoru Seino (37 patents)
- Hiroshi Ueno (297 patents)
- Koji Doi (67 patents)
- Tsukasa Onose (17 patents)
- Shigenobu Katagiri (16 patents)
- Toshitaka Ogawa (22 patents)
US Patent 4910555 · Granted Mar 20, 1990