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.

Date of Patent:
Nov. 25, 2025

Filed:

Jan. 28, 2020
Applicant:

Instrumentation Laboratory Company, Bedford, MA (US);

Inventors:

Paul Mccormack, Carlisle, MA (US);

Stephanie Tangard, Groton, MA (US);

Alberto Gomez Martinez De Lecea, Chelmsford, MA (US);

Dan Lin, Princeton, NJ (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/48 (2006.01); A61B 5/145 (2006.01); A61M 1/36 (2006.01); G01F 23/292 (2006.01);
U.S. Cl.
CPC ...
A61B 5/14535 (2013.01); A61M 1/3609 (2014.02); G01F 23/2921 (2013.01); G01N 33/48 (2013.01);
Abstract

Principals of refraction of a light ray are used to identify the location of an interface between two materials having different refractive indices. The interface may be an interface between a plasma layer and a red blood cell layer of a centrifuged container, for example. An array of light detector elements are arranged to receive light that has been refracted through different layers in a centrifuged sample. Elements of the light detector array are arranged at known locations relative to an emitter of the light so detection of light by one or more particular detector elements is indicative of the angle of refraction of the light. Vertical position of the sample is tracked and correlated with corresponding angles of refraction to determine the vertical position of the sample when a change in the angle of diffraction is detected.


Find Patent Forward Citations

Mccormack, Paul. (2025). Hematocrit level detection using ir laser refraction (U.S. Patent No. 12478291). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12478291

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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