Monitoring oil films
US6529273B1 · kind B1 · utility
21Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Mar 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The thickness of an organic material on a substrate, such as an oil film on a metal sheet (12), is monitored by illuminating the film with ultraviolet radiation (14) and measuring the fluorescent light intensity (44, 48) from the organic material. The reflectivity of the substrate is also monitored, and used in calculating the thickness. The technique is also applicable where the substrate is moving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.