Porous barrier media comprising color change indicators
US8187534B2 · kind B2 · utility
16Cited by
24References
44Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Apr 2, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides porous barrier compositions comprising color change indicators and methods of making and using the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.