Assignee
Inventors
- Tsutomu Tatematsu (2 patents)
- Kengi Togashi (1 patents)
- Masayuki Nakada (10 patents)
- Toyoji Sawada (14 patents)
- Kazuo Sukegawa (8 patents)
- Tomoyuki Yamada (61 patents)
- Yoshikazu Arisaka (8 patents)
US Patent 6686644 · Granted Feb 3, 2004