Assignee
Inventors
- Nobuyuki Ishigure (10 patents)
- Yoshio Chiba (19 patents)
- Akio Nishiyama (24 patents)
- Yasuaki NADAYA (4 patents)
- Toshihiko Kosugi (8 patents)
- Shigeo Shigeyama (7 patents)
- Tadashi Okubo (36 patents)
US Patent 10014138 · Granted Jul 3, 2018