Assignee
Inventors
- Takahiko Tanaka (11 patents)
- Kazukiyo Okada (9 patents)
- Akira Tsunoda (22 patents)
- Nobuyuki Yamamoto (118 patents)
- Tatsuo Maeda (52 patents)
- Seiichi Omoto (22 patents)
- Kozo Odoi (13 patents)
US Patent 4918360 · Granted Apr 17, 1990