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:
Dec. 16, 2025
Filed:
Jun. 24, 2022
Applicant:
Northern Digital Inc., Waterloo, CA;
Inventors:
Larry Chen, Fergus, CA;
David Willms, Waterloo, CA;
Athanasios Tommy Balkos, Waterloo, CA;
Shaulaine White, Cambridge, CA;
Assignee:
Northern Digital Inc., Waterloo, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 6/00 (2024.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01); G01S 17/06 (2006.01); G01S 17/66 (2006.01); G02B 1/11 (2015.01); G02B 5/00 (2006.01); G02B 5/08 (2006.01); G02B 5/12 (2006.01); G02B 5/128 (2006.01); G02B 5/20 (2006.01); G02B 7/00 (2021.01); G02B 27/32 (2006.01); G06F 3/03 (2006.01);
U.S. Cl.
CPC ...
G02B 5/208 (2013.01); G01S 17/66 (2013.01); G02B 5/12 (2013.01); G02B 27/32 (2013.01); A61B 6/547 (2013.01); A61B 2090/3979 (2016.02); A61B 2090/3983 (2016.02); A61B 2217/002 (2013.01); G02B 5/128 (2013.01); G02B 7/006 (2013.01);
Abstract
A retro-reflective marker comprising a bare retro-reflective layer; a protective layer with a near-infrared (NIR) wavelength specific anti-reflective coating; and a border with an NIR absorbent coating.