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:
Aug. 30, 2016
Filed:
Nov. 11, 2013
Joshua Friedman, Ridgefield, CT (US);
Joshua Friedman, Ridgefield, CT (US);
Other;
Abstract
The shade matching method and device of the subject invention is to be used by dentists and dental professionals to help in determining the correct shade of porcelain crowns, composite fillings and other cosmetically critical dental restorations. Based on the principle of metamerism, the method consists of using a light source for generating a light spectrum in at least two distinct wavelength spectra in sequence under the control of the operator of the light source inclusive of a first wavelength spectrum corresponding to daylight to enable the dentist or dental professional to perform a shade match the way a patient would view their restoration outside of a dental office in a real world environment and then switching to a second wavelength spectrum corresponding to either room light or ambient light.