Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440618 | Imaging element containing a blocked photographically useful compound | Xiqiang Yang, David H. Levy | 2002-08-27 |
| 6426179 | Imaging element containing a blocked photographically useful compound | Xiqiang Yang, Mark E. Irving, David H. Levy | 2002-07-30 |
| 6413708 | Imaging element containing a blocked photographically useful compound | Xiqiang Yang, David H. Levy | 2002-07-02 |