Method of measuring the flowing of a material
US4813781A · kind A · utility
3Cited by
5References
6Claims
0Family size
Inventors
Key dates
| Filing date | Aug 26, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Aug 26, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0071
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for measuring the flowing of the material, the following steps: forming an array of parallel strips of said material constituting a diffraction grating; submitting said grating at the same conditions as the material, the flowing of which is to be monitored; illuminating the grating by a single wavelength light beam and observing the diffracted light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.