Assignee
Inventors
- Hiroshi Yokogawa (15 patents)
- Masaru Yokoyama (62 patents)
- Kenji Tsubaki (18 patents)
- Kenji Sonoda (4 patents)
- Keishi Kousaka (3 patents)
- Mikio Sei (2 patents)
- Nobuaki YABUNOUCHI (4 patents)
US Patent 6154595 · Granted Nov 28, 2000