Fine grain carriers and medicinal composition prepared with the use of the same
US6368631B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1635
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention is directed to particulate carriers useful as drug carriers in a drug delivery system (DDS) and to pharmaceutical compositions making use of such carriers. The invention is characterized by the use, as the particulate carrier, of: graft copolymer (A) whose graft chain is poly N-alkylacrylamide chain, poly N-alkylmethacrylamide chain, etc.; and a composition containing a combination of the graft copolymer (A) and at least one graft copolymers selected from the group consisting of graft copolymers (B-1) having polyacrylic acid or polymethacrylic acid as the graft chain and graft copolymers (B-2) having a polyvinyl amine compound as the graft chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.