Impinj
Utility Patents
Last updated:
List of all Impinj patents 53 in total
| Status | Patent |
|---|---|
Grant | Utility: RFID integrated circuits with electrical bridges Filling date: 8 Sep 2025 Issue date: 2 Aug 2022 |
Grant | Utility: Enhanced RFID tag authentication Filling date: 8 Sep 2025 Issue date: 14 Jun 2022 |
Grant | Utility: Environment-based RFID IC behavior Filling date: 8 Sep 2025 Issue date: 24 May 2022 |
Grant | Utility: RFID integrated circuit identifier self-check Filling date: 8 Sep 2025 Issue date: 24 May 2022 |
Grant | Utility: Inventory-cycle-based RFID tag location Filling date: 8 Sep 2025 Issue date: 3 May 2022 |
Grant | Utility: High-speed RFID tag assembly using impulse heating Filling date: 8 Sep 2025 Issue date: 29 Mar 2022 |
Grant | Utility: RFID loss-prevention based on transition risk Filling date: 8 Sep 2025 Issue date: 8 Feb 2022 |
Grant | Utility: Digital identities for physical items Filling date: 8 Sep 2025 Issue date: 25 Jan 2022 |
Grant | Utility: RFID tags enforcing persistence while powered Filling date: 8 Sep 2025 Issue date: 14 Dec 2021 |
Grant | Utility: Rectifier backflow reduction via biasing Filling date: 8 Sep 2025 Issue date: 30 Nov 2021 |
Grant | Utility: Item identification via RFID tag secret Filling date: 8 Sep 2025 Issue date: 14 Sep 2021 |
Grant | Utility: Portal monitoring with steered-beam RFID systems Filling date: 8 Sep 2025 Issue date: 31 Aug 2021 |
Grant | Utility: RFID tags with public and private inventory states Filling date: 8 Sep 2025 Issue date: 13 Jul 2021 |
Grant | Utility: RFID tag assembly methods Filling date: 8 Sep 2025 Issue date: 1 Jun 2021 |
Grant | Utility: Fast frequency switching for RFID applications Filling date: 8 Sep 2025 Issue date: 25 May 2021 |
Grant | Utility: RFID loss-prevention based on transition risk Filling date: 8 Sep 2025 Issue date: 25 May 2021 |
Grant | Utility: RFID-based item presence detection Filling date: 8 Sep 2025 Issue date: 23 Mar 2021 |
Grant | Utility: RFID integrated circuits with electrical bridges Filling date: 8 Sep 2025 Issue date: 2 Mar 2021 |
Grant | Utility: RFID tag clock frequency reduction during tuning Filling date: 8 Sep 2025 Issue date: 23 Feb 2021 |
Grant | Utility: Exit-code-based RFID loss-prevention system Filling date: 8 Sep 2025 Issue date: 9 Feb 2021 |
Grant | Utility: Impedance-change mitigation in RFID tags Filling date: 8 Sep 2025 Issue date: 5 Jan 2021 |
Grant | Utility: RFID integrated circuits with antenna contacts on multiple surfaces Filling date: 8 Sep 2025 Issue date: 5 Jan 2021 |
Grant | Utility: Environment-based RFID IC behavior Filling date: 8 Sep 2025 Issue date: 29 Dec 2020 |
Grant | Utility: RFID systems with session-dependent replies Filling date: 8 Sep 2025 Issue date: 29 Dec 2020 |
Grant | Utility: Inventory-cycle-based RFID tag location Filling date: 8 Sep 2025 Issue date: 8 Dec 2020 |
Grant | Utility: High-speed RFID tag assembly using impulse heating Filling date: 8 Sep 2025 Issue date: 24 Nov 2020 |
Grant | Utility: User-filtered RFID inventory Filling date: 8 Sep 2025 Issue date: 3 Nov 2020 |
Grant | Utility: Level shifter circuit with self-gated transition amplifier Filling date: 8 Sep 2025 Issue date: 27 Oct 2020 |
Grant | Utility: RFID integrated circuit identifier self-check Filling date: 8 Sep 2025 Issue date: 15 Sep 2020 |
Grant | Utility: RFID tags enforcing persistence while powered Filling date: 8 Sep 2025 Issue date: 11 Aug 2020 |
Grant | Utility: Location-based access to RFID tag information Filling date: 8 Sep 2025 Issue date: 4 Aug 2020 |
Grant | Utility: Tag-to-tag communication using RFID readers Filling date: 8 Sep 2025 Issue date: 21 Jul 2020 |
Grant | Utility: Synthesized-beam RFID reader system with gain compensation and unactivated antenna element coupling suppression Filling date: 8 Sep 2025 Issue date: 21 Jul 2020 |
Grant | Utility: Proxy-based reader authentication by trusted authority Filling date: 8 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: RFID tag rectifiers with bias current reuse Filling date: 8 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: Digital identities for physical items Filling date: 8 Sep 2025 Issue date: 30 Jun 2020 |
Grant | Utility: Fast frequency switching for RFID applications Filling date: 8 Sep 2025 Issue date: 9 Jun 2020 |
Grant | Utility: RFID tag and reader authentication by trusted authority Filling date: 8 Sep 2025 Issue date: 26 May 2020 |
Grant | Utility: RFID tags with port-dependent functionality Filling date: 8 Sep 2025 Issue date: 12 May 2020 |
Grant | Utility: Enhanced RFID tag authentication Filling date: 8 Sep 2025 Issue date: 12 May 2020 |
Grant | Utility: Portal monitoring with steered-beam RFID systems Filling date: 8 Sep 2025 Issue date: 12 May 2020 |
Grant | Utility: Exit-code-based RFID loss-prevention system Filling date: 8 Sep 2025 Issue date: 24 Mar 2020 |
Grant | Utility: RFID-based item presence detection Filling date: 8 Sep 2025 Issue date: 25 Feb 2020 |
Grant | Utility: Impedance-change mitigation in RFID tags Filling date: 8 Sep 2025 Issue date: 25 Feb 2020 |
Grant | Utility: User-filtered RFID inventory Filling date: 8 Sep 2025 Issue date: 28 Jan 2020 |
Grant | Utility: RFID loss-prevention based on transition risk Filling date: 8 Sep 2025 Issue date: 31 Dec 2019 |
Grant | Utility: Self-tuning of RFID tags using nonuniform impedance steps Filling date: 8 Sep 2025 Issue date: 3 Dec 2019 |
Grant | Utility: RFID tag clock frequency reduction during tuning Filling date: 8 Sep 2025 Issue date: 15 Oct 2019 |
Grant | Utility: RFID tag tracking using tag population management Filling date: 8 Sep 2025 Issue date: 1 Oct 2019 |
Grant | Utility: RFID integrated circuit identifier self-check Filling date: 8 Sep 2025 Issue date: 17 Sep 2019 |
Showing 1 to 50 of 53 patents.