Composition for feeding ruminants containing a biologically active substance and its preparation
US4832967A · kind A · utility
34Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S426/807
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Composition for feeding ruminants, containing a water-soluble biologically active substance which is stable in a medium whose pH is greater than or equal to 5 and which permits the release of the active substance in a medium whose pH is less than 3.5, comprising: PA0 a core containing the active substance, which has optionally undergone a surface treatment, PA0 a first coating layer consisting of a film-forming substance sensitive to pH variations, optionally in combination with an inorganic filler, and PA0 a second coating layer consisting of a hydrophobic substance, optionally in combination with an inorganic filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.