Sustained-release preparations and the process thereof
US5023089A · kind A · utility
76Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5073
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Sustained-release preparations essentially consisting of 1 part by weight of a water-soluble active ingredient and 1 to 10 parts by weight of two or more fats where the melting point is different in one from others, being capable of releasing active ingredients at a constant rate for a long-period of time, and being manufactured easily and economically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.