Assignee
Inventors
- Tatsuji Enoki (33 patents)
- Hiroaki Sagawa (47 patents)
- Takeshi Sakai (28 patents)
- Haruo Oyashiki (1 patents)
- Hitoshi Sakakibara (10 patents)
- Kazuyori Ochiai (4 patents)
- Ikunoshin Kato (211 patents)
US Patent 7217817 · Granted May 15, 2007