Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639039 | Photochromic coating composition comprising nanoscales particles and process for providing substrate coated with the same | Lisong Hou, Marion Pietsch, Martin Mennig, Helmut Schmidt | 2003-10-28 |