Assignee
Inventors
- Masuto Shimizu (6 patents)
- Akio Adachi (11 patents)
- Hiroyuki Ogawa (244 patents)
- Hiroshi Kuwako (1 patents)
- Norio Kanamoto (3 patents)
- Masaji Shiraishi (1 patents)
- Naotoshi Aoyama (1 patents)
- Takeo Sekine (1 patents)
US Patent 5884643 · Granted Mar 23, 1999