Assignee
Inventors
- Yoshihiko Okamoto (60 patents)
- Haruo Yoda (70 patents)
- Ikuo Takada (3 patents)
- Yukinobu Shibata (7 patents)
- Akira Hirakawa (13 patents)
- Norio Saitou (31 patents)
- Shinji Okazaki (47 patents)
- Fumio Murai (37 patents)
US Patent 5757409 · Granted May 26, 1998