Fibrous structures with labile active substance
US5952092A · kind A · utility
34Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fibrous structure comprising a fibrous matrix with immobilized surrogate particles, is provided. A labile active substance is selectively deposited on the immobilized surrogate particles. In one embodiment, the surrogate particles are porous and have surface cavities, and the labile active substance is deposited in the pores and surface cavities. In another embodiment, the labile active substance is in attractive association with or attached to the surrogate particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.