Acne patch
US6495158B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An adhesive patch is provided wherein the patch includes a flexible backing having a front side and a back side. The patch also includes a therapeutic formulation positioned on and in at least a portion of the front side of the backing such that the therapeutic formulation is partially embedded in at least a portion of the front side of the backing. At least a portion of the backing is treated with a hydrophobic sizing agent such that the portion of the backing that is treated with the hydrophobic sizing agent has a surface energy of about 20 dynes/cm2 to about 65 dynes/cm2. The therapeutic formulation includes a topical acne drug, a solvent that dissolves the topical acne drug, and a pressure sensitive adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.