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. 30, 2025
Filed:
Sep. 30, 2021
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
John A. Wheatley, Stillwater, MN (US);
William Gray, Woodbury, MN (US);
Bharat R. Acharya, Woodbury, MN (US);
Aaron M. Marcella, White Bear Lake, MN (US);
Stephen M. Kennedy, St. Paul, MN (US);
Brett J. Sitter, Marine on St. Croix, MN (US);
Michael L. Steiner, New Richmond, MN (US);
Mark A. Roehrig, Stillwater, MN (US);
Jonah Shaver, St. Paul, MN (US);
Jessica E. Demay, Maplewood, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/25 (2006.01); G01N 21/03 (2006.01);
U.S. Cl.
CPC ...
G01N 21/031 (2013.01); G01N 21/253 (2013.01); G01N 2021/0314 (2013.01); G01N 2201/0636 (2013.01); G01N 2201/0683 (2013.01);
Abstract
A measurement system is disclosed and includes a light source, a receiver, a measurement subject, and a reflector. The reflector is disposed on an opposite side of the measurement subject than are the light source and the receiver.