Assignee
Inventors
- Unknown
- Katsuji Mitsui (4 patents)
- Masahiko Shimizu (141 patents)
- Shinichi Yamamoto (139 patents)
- Atsushi Shimizu (166 patents)
- Masahiko Shinotsuka (1 patents)
- Masaaki Yamagishi (13 patents)
- Hiroshi Tsuji (108 patents)
US Patent 7622898 · Granted Nov 24, 2009