Monitoring oil films
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
Mar 7, 2000
filing date -
Sep 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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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.
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