Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6475473 | Perfume compositions | Keith Douglas Perring, John Martin Behan | 2002-11-05 |
| 6231846 | Hair treatment compositions containing reducing sulphur species and zinc compound | Keith Douglas Perring | 2001-05-15 |