The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2005
Filed:
Nov. 26, 2002
Paul H. Shelley, Lakewood, WA (US);
Diane R. Lariviere, Seattle, WA (US);
Paul H. Shelley, Lakewood, WA (US);
Diane R. LaRiviere, Seattle, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
Amount of opaque coating on a substrate is determined. An infrared beam is transmitted into the opaque coating on the substrate. Infrared beams scattered by the opaque coating are collected and detected at a first wavelength and a second wavelength. Infrared energy Iand Iof the collected infrared beams at the first and second wavelengths, respectively, are compared with predetermined values of infrared energy Iand Iof collected infrared beams at the first and second wavelengths, respectively, that are scattered by a reference substrate without the opaque coating to determine absorbance values A1 and A2 for the opaque coating at the first and second wavelengths, respectively. Absorbance values A1 and A2 at the first and second wavelengths are given by equations A1=−log(I/I) and A2=−log(I/I). A difference A1−A2 is correlated to an opaque coating amount.