Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6602447 | Low-color ultraviolet absorbers for high UV wavelength protection applications | Todd D. Danielson, Xiaodong Zhao, Daniel Connor, Eric B. Stephens, Jason D. Sprinkle +1 more | 2003-08-05 |
| 6596795 | Low-color vanillin-based ultraviolet absorbers and methods of making thereof | Xiaodong Zhao, Jusong Xia | 2003-07-22 |
| 6559216 | Low-color ultraviolet absorber compounds and compositions thereof | Xiaodong Zhao, Todd D. Danielson, Daniel Connor, Eric B. Stephens, Jason D. Sprinkle +1 more | 2003-05-06 |