Assignee
Inventors
- Osamu Yanagisawa (11 patents)
- Kenji Oda (35 patents)
- Naoki Sugimoto (45 patents)
- Yoshio Takegawa (2 patents)
- Akira Takada (51 patents)
- Hideyo Osada (2 patents)
- Haruo Aizawa (2 patents)
- Koji Miura (98 patents)
US Patent 5631195 · Granted May 20, 1997