Assignee
Inventors
- Masaaki Tamura (16 patents)
- Ayako Fujii (3 patents)
- Yoshiko Kobari (4 patents)
- Mamoru Nagano (4 patents)
- Kiyoshi Watanabe (134 patents)
- Hidehiko Morinaga (10 patents)
- Shigeki Koyama (8 patents)
- Yoshikazu Sawada (3 patents)
US Patent 6144765 · Granted Nov 7, 2000