Assignee
Inventors
- Keiichi Natsuhara (2 patents)
- Katsuyoshi Ishida (3 patents)
- Kazuaki Yoshida (58 patents)
- Kiyomi Okawa (2 patents)
- Hiroshi Itoh (257 patents)
- Takeshi Oga (2 patents)
- Kazufumi Igarashi (2 patents)
US Patent 9979066 · Granted May 22, 2018