Tablet and device for the evaporation of volatile substances
US8406616B2 · kind B2 · utility
1Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Jul 14, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L9/035
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention refers to a tablet (1) for retaining a volatile substance in a liquid or solid state, such as a perfume and/or an insecticide. The tablet comprises at least a first and a second layers (2,4) of volatile substance retaining material, said first and second layers being spaced apart from each other at a selected distance, and wherein it further comprises a layer of impermeable material (3) joined to said layers and located in between said first and second layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.