Assignee
Inventors
- Keisuke Fujisaki (6 patents)
- Kiyoshi Wajima (4 patents)
- Kenji Umetsu (15 patents)
- Kenzo Sawada (6 patents)
- Takatsugu Ueyama (2 patents)
- Takehiko Toh (13 patents)
- Kensuke Okazawa (5 patents)
- Yasushi Okumura (86 patents)
US Patent 5746268 · Granted May 5, 1998