Assignee
Inventors
- Yasushi Umeda (25 patents)
- Tetsuo Tomiyama (19 patents)
- Hiroyuki Yoshikawa (74 patents)
- Yuichi Koike (10 patents)
- Yoshiki Shimomura (15 patents)
- Kazuto Hori (9 patents)
- Sadao Tanigawa (12 patents)
US Patent 5396314 · Granted Mar 7, 1995