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:
Mar. 01, 2005
Filed:
Nov. 30, 2001
Applicants:
Mark J. Davis, Clarks Summit, PA (US);
Joseph S. Hayden, Clarks Summit, PA (US);
Inventors:
Mark J. Davis, Clarks Summit, PA (US);
Joseph S. Hayden, Clarks Summit, PA (US);
Assignee:
Schott Technologies, Inc., Duryea, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N025/16 ;
U.S. Cl.
CPC ...
Abstract
A method for determining the thermal expansion coefficient of a substance comprises, determining at each of two or more temperatures the absolute position of more than one resonant interference peaks of a Fabry-Perot etalon whose optical path is defined by said substance and calculating said coefficient from observed difference(s) in wavelength or frequency of said positions at said two or more temperatures.