Assignee
Inventors
- Kunio Isobe (8 patents)
- Takaaki Hira (17 patents)
- Takayuki Naoi (5 patents)
- Hideyuki Nikaido (26 patents)
- Kozo Fujiwara (6 patents)
- Shigeru Ueki (7 patents)
- Kouzou Ishikawa (1 patents)
- Toshihiro Hanada (21 patents)
US Patent 4848127 · Granted Jul 18, 1989