Assignee
Inventors
- Tomoyoshi Tsurufuji (28 patents)
- Shoichi Koganei (4 patents)
- Eiji Sugaya (12 patents)
- Hiroshi Hashimoto (338 patents)
- Masaru Akiba (57 patents)
- Futoshi Nishikawa (3 patents)
- Hiroyasu Suzue (8 patents)
- Isao Ohta (10 patents)
US Patent 6233862 · Granted May 22, 2001