Assignee
Inventors
- Norio Matsuda (44 patents)
- Toshio Konno (39 patents)
- Kaneo Yamamoto (3 patents)
- Shinya Tominaga (6 patents)
- Susumu Kubo (16 patents)
- Yasuyuki Mori (18 patents)
- Naoki Akiyama (58 patents)
- Masaki Murakami (21 patents)
US Patent 4532620 · Granted Jul 30, 1985