Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10268050 | Spectacle lens | Chi Ho To, Takashi Hatanaka, Yasutake Masuda | 2019-04-23 |
| 10231897 | Methods, devices, and systems for inhibiting ocular refractive disorders from progressing | Yan Yin Tse, Chi Ho To | 2019-03-19 |