Assignee
Inventors
- Masahiro Neya (22 patents)
- Tatsuya Zenkoh (10 patents)
- Hitoshi Sawada (13 patents)
- Chiyoshi Kasahara (14 patents)
- Masayoshi Murata (44 patents)
- Keiji Hemmi (49 patents)
- Mitsue Hemmi (1 patents)
US Patent 6207686 · Granted Mar 27, 2001