Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9492075 | Prism prescription value acquisition system, acquisition method, acquisition apparatus and program for correcting fixation disparity | Volkhard Schroth, Wolfgang Jaschinski, Takashi Hatanaka | 2016-11-15 |
| 7996997 | Spectacle measuring tool | Takashi Hatanaka | 2011-08-16 |