Assignee
Inventors
- Koichi Yokosawa (15 patents)
- Shizuo Ishikawa (12 patents)
- Ryuichi Shinomura (33 patents)
- Yukio Ito (127 patents)
- Shuzo Sano (8 patents)
- Hiroshi Kanda (62 patents)
- Yutaka Sato (178 patents)
- Toshio Kondo (91 patents)
US Patent 5829439 · Granted Nov 3, 1998