Assignee
Inventors
- Tomio Takeuchi (160 patents)
- Takaaki Aoyagi (44 patents)
- Masa Hamada (37 patents)
- Hiroshi Naganawa (29 patents)
- Keiji Ogawa (2 patents)
- Machiko Nagai (2 patents)
- Yasuhiko Muraoka (21 patents)
- Makoto Tsuda (14 patents)
US Patent 5162500 · Granted Nov 10, 1992