Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9782941 | Polarized plastic lens for spectacles and method for manufacturing polarized plastic lens for spectacles | Akinori Yamamoto, Masaki Ihara, Kenichi Tonouchi | 2017-10-10 |
| 9638938 | Polarizing lens and method of manufacturing the same | Toshihiko Shimizu, Kenichi Tonouchi, Akinori Yamamoto, Masaki Ihara | 2017-05-02 |