Assignee
Inventors
- Tetsuya Someno (5 patents)
- Fumika Yamada (11 patents)
- Hideo Sugimura (6 patents)
- Yasuhiko Muraoka (21 patents)
- Makoto Tsuda (14 patents)
- Tomio Takeuchi (160 patents)
- Takaaki Aoyagi (44 patents)
US Patent 5221752 · Granted Jun 22, 1993