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. 20, 2022
Filed:
Aug. 23, 2019
Fisher Controls International Llc, Marshalltown, IA (US);
Kenneth William Junk, Marshalltown, IA (US);
John S. Fuller, Marshalltown, IA (US);
Annette Lynn Latwesen, Marshalltown, IA (US);
Fisher Controls International, LLC, Marshalltown, IA (US);
Abstract
Methods and apparatus to establish secure low energy wireless communications in a process control system are disclosed. An example field device includes a Bluetooth Low Energy (BLE) interface to receive a first initialization message from a remote device over an unpaired BLE connection. The first initialization message includes a plaintext message containing authentication content. The authentication content is generated based on a private authentication token available to the remote device using middleware. The field device also includes a BLE message analyzer to validate the plaintext message based on the authentication content using the authentication token stored by the field device.