Assignee
Inventors
- Ken Yamamura (13 patents)
- Naoto Ueda (42 patents)
- Kazunari Michii (30 patents)
- Hitoshi Fujimoto (47 patents)
- Kiyoaki Tsumura (15 patents)
- Hitoshi Sasaki (100 patents)
- Takashi Miyamoto (201 patents)
US Patent 5334803 · Granted Aug 2, 1994