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:
Feb. 03, 2026
Filed:
Sep. 27, 2024
Impinj, Inc., Seattle, WA (US);
Rene Dominic Martinez, Seattle, WA (US);
Impinj, Inc, Seattle, WA (US);
Abstract
An RFID tag IC manufacturer may be identified using a backscatter link frequency. An RFID reader may transmit a command, such as a Query-type command, and include an analog parameter specifying a first reply frequency and a digital parameter specifying a second reply frequency different from the first reply frequency. A receiving the command, RFID tag IC may respond using either the first reply frequency or the second frequency, depending on its manufacturer. For example, a first RFID tag IC with a set of first features may use the first reply frequency, while a second RFID tag IC with a set of second features may reply using the second BLF, or vice versa. The RFID reader, upon receiving the RFID tag IC response, may identify a manufacturer of the RFID tag IC based on the reply frequency, and infer one or more features and capabilities of the RFID tag IC.