Method for coating active principles with a pH-sensitive polymer
US5225238A · kind A · utility
13Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Mar 8, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A new method of coating an active principle which comprises the step of coating an active principle with an aqueous emulsion or dispersion containing one or more pH-sensitive polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.