Assignee
Inventors
- Takahisa Tokunaga (6 patents)
- Junko Kajihara (1 patents)
- Masao Hirayama (10 patents)
- Hidemasa Hidaka (13 patents)
- Hayami Itoh (4 patents)
- Masao Hayashitani (1 patents)
- Yoshihiro Kajibata (1 patents)
- Tatsuya Imura (2 patents)
US Patent 5591478 · Granted Jan 7, 1997