Assignee
Inventors
- Hajime Asuma (3 patents)
- Tsukasa Hasegawa (29 patents)
- Akira Naito (49 patents)
- Yasuhiko Kasai (5 patents)
- Tomoko Tsuchiya (2 patents)
- Shinichi Yoshida (143 patents)
- Yasumasa Matsuda (28 patents)
US Patent 5592605 · Granted Jan 7, 1997