Particulate materials
US8084533B2 · kind B2 · utility
1Cited by
0References
13Claims
0Family size
Inventor
Key dates
| Filing date | May 5, 2005 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Aug 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides the use of a particulate polymer material as a support for an active agent, characterized in that said polymer material is a polymer produced by copolymerizing an unsaturated heterocyclic monomer and squaric or croconic acid or a derivative thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.