Assignee
Inventors
- Takio Okamoto (12 patents)
- Kazunori Hirao (26 patents)
- Toru Hirayama (10 patents)
- Hajime Mae (2 patents)
- Takao Wakitani (14 patents)
- Yukiharu Ito (15 patents)
- Kouichi Nomura (3 patents)
- Seiji Matsubara (1 patents)
US Patent 5629716 · Granted May 13, 1997