Assignee
Inventors
- Shoji Ito (58 patents)
- Masaki Yamamoto (269 patents)
- Takaji Umeno (49 patents)
- Katsuhiro Asano (40 patents)
- Yasushi Amano (36 patents)
- Satoru Onozawa (12 patents)
- Shusaku Fujimoto (5 patents)
US Patent 6522968 · Granted Feb 18, 2003