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.

Date of Patent:
Sep. 09, 2008

Filed:

Jul. 18, 2007
Applicants:

Michael A. Marcus, Honeoye Falls, NY (US);

Steven C. Switalski, Rochester, NY (US);

Inventors:

Michael A. Marcus, Honeoye Falls, NY (US);

Steven C. Switalski, Rochester, NY (US);

Assignee:

Eastman Kodak Company, Rochester, NY (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method of measuring the thickness or the rate of change of thickness of a layer as the layer is being formed on a substrate, includes illuminating the layer through the substrate with low coherence light that transmits through the layer; collecting a portion of the reflected light from each optical interface of the substrate and layer with a low coherence interferometer; and, calculating the thickness or the rate of change of thickness of the layer according to the obtained interferometric data.


Find Patent Forward Citations

Marcus, Michael. (2008). Measuring layer thickness or composition changes (U.S. Patent No. 7424389). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7424389

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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