Method and apparatus to identify asbestos and aramid
US6144208A · kind A · utility
1Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for identifying and/or differentiating between asbestos materials and aramid materials comprises the steps of rubbing an area of a surface of a material (44) to be identified, with an acrylic reference material (28), measuring the polarity of the generated electrostatic charge and comparing the polarity with polarities of charge generated from surfaces of known asbestos and aramid materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.