Collagen preparation for the controlled release of active substances
US6761908B1 · kind B1 · utility
13Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1996 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Oct 25, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/802
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A collagen preparation for the controlled release of active substances is characterized in that it has mixtures of acid-insoluble collagens with different molecular weight distributions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.