Detection of microbe contamination on elastomeric articles
US7300770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jun 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/528
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An elastomeric article that contains a chromogen that undergoes a detectable change in color in the presence of one or more microbes is provided. For example, in one embodiment, the chromogen is a solvatochromic dye (e.g., Reichardt's dye) that undergoes a color change in the presence of bacteria or other microbes. More specifically, such dyes may respond to differences in polarity between microbe components (e.g., cell membrane, cytoplasm, etc.) and the environment outside the cell. Alternatively, other mechanisms may be wholly or partially responsible for the interaction between the dye and the microbe, such as acid-base reactions, redox reactions, and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.