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:
Jan. 27, 2004
Filed:
Jul. 19, 2000
Jeffrey A. Simpson, Peoria, IL (US);
Mark A. Imbrock, Sylvania, OH (US);
Electronic Design To Market, Inc., Toledo, OH (US);
Abstract
A method and apparatus for detecting properties of reflective transparent surface coatings on a sheet of transparent material, such as a sheet of glass or a sheet of plastic material. One or more light beams are directed at an angle to the surfaces of the material under test and the energy in surface reflections is sensed. The presence and surface location of a surface coating is determined from the relative magnitudes of surface reflections of the light beam. The type of coating is determined from the magnitudes of reflections from the surface coating of one or more different wavelength light beams. The surface coating may be, for example, a Low-E coating, or a metal or metal oxide coating left on a sheet of float glass.