Assignee
Inventors
- Norito Watanabe (14 patents)
- Atsushi Kawabata (33 patents)
- Tsugio Tomita (6 patents)
- Toshio Sakai (55 patents)
- Yasuo Sasaki (82 patents)
- Yoshiaki Usami (9 patents)
- Akihiro Sakamoto (28 patents)
- Kengiro Sato (1 patents)
US Patent 5717848 · Granted Feb 10, 1998