Assignee
Inventors
- Shunji Tanaka (62 patents)
- Akira Yamaoka (19 patents)
- Hidenori Umeno (17 patents)
- Masatoshi Haraguchi (16 patents)
- Kiyoshi Ogawa (55 patents)
- Keiji Saijo (1 patents)
- Katsumi Takeda (16 patents)
US Patent 5341484 · Granted Aug 23, 1994