Softgel formulation containing retinol
US5891470A · kind A · utility
34Cited by
13References
35Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/375
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A softgel formulation containing retinol comprises a soft gelatin shell and a fill material within that shell containing retinol-impregnated microparticles. The fill material may be an optionally thickened silicone oil, or may be an emulsion comprising a silicone oil. Ascorbic acid may be present as ascorbic acid-impregnated microparticles and/or within the emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.