Composition for feeding ruminants
US5186937A · kind A · utility
40Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1990 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jun 22, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5026
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition which is stable in a medium in which the pH is greater than or equal to 5.5 and which permits the release of an active substance in a medium in which the pH is less than or equal to 3.5, comprising the active substance, which contains inclusions of, or which is completely or partially covered by, a pH sensitive material whose extent and/or rate of swelling is greater in an acidic medium than in a neutral medium, and a coating of a hydrophobic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.