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:
May. 26, 2026
Filed:
May. 16, 2023
Koninklijke Philips N.v., Eindhoven, NL;
Cornelis Reinder Ronda, Aachen, DE;
Martin Pekar, Eindhoven, NL;
Jindrich Charvat, Statenice, CZ;
Bernardus Hendrikus Wilhelmus Hendriks, Eindhoven, NL;
Cristian Nicolae Presura, Veldhoven, NL;
Amir Hussein Rmaile, Eindhoven, NL;
Sandra Hotzl, Eindhoven, NL;
Igor Wilhelmus Franciscus Paulussen, Nuenen, NL;
Matthias Born, Eindhoven, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A device and method for providing a classification of tooth surface materials using measured reflectance values for light within a particular optical band. In particular, at least two optical reflectance measurements may obtained within an optical wavelength band of 550 nm to 650 nm, and wherein a characteristic value proportional to a difference or ratio of those measurements is computed. This provides an indication, direct or indirect, of a sign of a slope of a reflectance spectrum within that band, and this has been identified through experiment as a reliable differentiator of healthy vs unhealthy enamel (presence of caries vs absence of caries).