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:
Aug. 19, 2025

Filed:

Mar. 15, 2021
Applicant:

Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);

Inventors:

Colin Gordon, Katy, TX (US);

Duane C. Skelton, Bellingham, WA (US);

Abhilash Manjunath, Mill Creek, WA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/40 (2022.01);
U.S. Cl.
CPC ...
H04L 63/20 (2013.01); H04L 63/0435 (2013.01);
Abstract

An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory that includes instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to transmit a first data frame and a second data frame to a switch of the electric power distribution system, determine whether the switch transmits the first data frame and not the second data frame, and establish a media access control security key agreement (MKA) based on a determination of whether the switch transmits the first frame and not the second data frame.


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