Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540986 | Sunscreen compositions | Elvin R. Lukenbach, Curtis Cole, Ralph Stutzman | 2003-04-01 |
| 6159480 | Cosmetic makeup composition | Chung-Ye Tseng, Marie E. Yednak | 2000-12-12 |
| 5980871 | Sunscreen compositions | Elvin R. Lukenbach, Jean Holland, Curtis Cole, Ralph Stutzman | 1999-11-09 |
| 5028417 | Sunscreen compositions | Gulguhji R. Bhat, Martin K. Lindemann | 1991-07-02 |
| 4696773 | Process for the preparation of isethionic acid | Elvin R. Lukenbach, Anthony M. Schwartz | 1987-09-29 |