Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10226202 | Contact-angle measurement method, contact-angle measurement device, bioprosthetic-member inspection device, and storage medium | Yohei Takeshita, Kiyotaka Utsumi | 2019-03-12 |
| 4700411 | Helmet | Kazuhiro Kawasaki | 1987-10-20 |
| 4556994 | Fullface-type helmet | Kazuhiro Kawasaki | 1985-12-10 |
| 4519099 | Helmet | Tadashi Kamiya, Kazuhiro Kawasaki | 1985-05-28 |