Assignee
Inventors
- Shigeru Ban (10 patents)
- Masaru Ozaki (60 patents)
- Arata Yoshida (4 patents)
- Masahiro Hanyu (2 patents)
- Takeshi Miyazaki (242 patents)
- Seiichi Muramatsu (1 patents)
- Haruji Tsubota (2 patents)
- Naoya Sasaki (20 patents)
US Patent 5622013 · Granted Apr 22, 1997