Assignee
Inventors
- Shigeaki Mizushima (48 patents)
- Noriko Watanabe (78 patents)
- Hiroko Iwagoe (13 patents)
- Seiji Makino (16 patents)
- Sigeo Kawamura (2 patents)
- Yusuke Tsuda (19 patents)
- Nobuo Bessho (23 patents)
US Patent 5756649 · Granted May 26, 1998