Assignee
Inventors
- Ryoso Masaki (84 patents)
- Toshiyuki Koterazawa (6 patents)
- Kazuo Tahara (53 patents)
- Kunio Miyashita (68 patents)
- Yoshikazu Hoshi (26 patents)
- Tadashi Takahashi (173 patents)
- Shuichi Nakano (50 patents)
US Patent 5239490 · Granted Aug 24, 1993