Assignee
Inventors
- Eiji Okabe (24 patents)
- Ryushi Shundo (21 patents)
- Shinichi Saito (135 patents)
- Hideo Saito (148 patents)
- Takashi Kaneko (163 patents)
- Tomoo Furukawa (33 patents)
- Akira Sakaigawa (92 patents)
- Mitsuhiro Koden (60 patents)
US Patent 6067130 · Granted May 23, 2000