Assignee
Inventors
- Satoshi Ozawa (70 patents)
- Takafumi Kikuchi (36 patents)
- Yoshiki Murakami (33 patents)
- Masaaki Nakai (143 patents)
- Koutarou Yamashita (4 patents)
- Toshiko Fujii (4 patents)
- Yuji Miyahara (30 patents)
- Yoshio Watanabe (118 patents)
US Patent 5690893 · Granted Nov 25, 1997