Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12422605 | Near infrared optical interference filters with improved transmission | Shengyuan Bai | 2025-09-23 |
| 12000033 | Method of fabricating anisotropic optical interference filter | — | 2024-06-04 |
| 11474422 | Reflective color correction for phosphor illumination systems | Michael Newell | 2022-10-18 |
| 11372144 | Near infrared optical interference filters with improved transmission | Shengyuan Bai | 2022-06-28 |
| 11365471 | Method of fabricating anisotropic optical interference filter | — | 2022-06-21 |
| 10871644 | Enhancement of output of optically pumped phosphor by use of surface nanostructures | Michael Newell | 2020-12-22 |
| 10502880 | Method of fabricating anisotropic optical interference filter | — | 2019-12-10 |
| 10437042 | Enhancement of output of optically pumped phosphor by use of surface nanostructures | Michael Newell | 2019-10-08 |
| 9989684 | Near infrared optical interference filters with improved transmission | — | 2018-06-05 |
| 9927369 | Automated defect detection and mapping for optical filters | — | 2018-03-27 |
| 9804310 | Method of fabricating anisotropic optical interference filter | — | 2017-10-31 |
| 4795349 | Coded font keyboard apparatus | Joan Sprague | 1989-01-03 |
| 4768959 | Method of teaching and transcribing of language through the use of a periodic code of language elements | Joan Sprague | 1988-09-06 |
| 4650423 | Method of teaching and transcribing of language through the use of a periodic code of language elements | Joan Sprague | 1987-03-17 |
| 4515566 | Flip card apparatus for forming units of speech | — | 1985-05-07 |