Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant
US6149843A · kind A · utility
6Cited by
23References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jul 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Microcapsules containing a biologically active material which is sensitive to ultraviolet light are prepared which contain an ultraviolet light protectant selected from titanium dioxide, zinc oxide and mixtures thereof, suspended and thoroughly dispersed in a liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.