Independent measurement of dual sided properties of sheet material
US7593106B2 · kind B2 · utility
4Cited by
11References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 24, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jul 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/346
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dual sided sheet surface property sensor has the capability to simultaneously measure both sides of a moving sheet at the same location of the sheet on the top and bottom surfaces of the sheet. The energy directed to each side of the sheet may include UV, visible light, infrared, radio frequency, microwave, broadband, or X-ray. The sensor has a source and associated detector on each side of the moving sheet and each source provides energy at a different modulation frequency and the associated detector is responsive only to that frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.