Assignee
Inventors
- Toshihisa Tsukada (50 patents)
- Yoshiyuki Kaneko (126 patents)
- Hideaki Yamamoto (141 patents)
- Norio Koike (48 patents)
- Ken Tsutsui (19 patents)
- Haruo Matsumaru (25 patents)
- Yasuo Tanaka (168 patents)
US Patent 5200634 · Granted Apr 6, 1993