Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6531118 | Topical compositions with a reversible photochromic ingredient | Andrew H. Pechko, Robert Kalafsky | 2003-03-11 |
| 6517816 | Sunscreen emulsion composition and method of use | Andrew H. Pechko, Helen Wang | 2003-02-11 |