Littelfuse
Utility Patents
Last updated:
List of all Littelfuse patents 122 in total
| Status | Patent |
|---|---|
Grant | Utility: Self-oscillating spread spectrum frequency control loop Filling date: 7 Sep 2025 Issue date: 26 Jan 2021 |
Grant | Utility: Circuit protection device with PTC element and secondary fuse Filling date: 7 Sep 2025 Issue date: 19 Jan 2021 |
Grant | Utility: Overcurrent protection device and method of forming an overcurrent protection device Filling date: 7 Sep 2025 Issue date: 5 Jan 2021 |
Grant | Utility: PPTC material with low percolation threshold for conductive filler Filling date: 7 Sep 2025 Issue date: 29 Dec 2020 |
Grant | Utility: Die stack assembly using an edge separation structure for connectivity through a die of the stack Filling date: 7 Sep 2025 Issue date: 1 Dec 2020 |
Grant | Utility: High current one-piece fuse element and split body Filling date: 7 Sep 2025 Issue date: 1 Dec 2020 |
Grant | Utility: Disc fuse Filling date: 7 Sep 2025 Issue date: 24 Nov 2020 |
Grant | Utility: Optically isolated latching solid state relay with low on resistance and linear operation Filling date: 7 Sep 2025 Issue date: 10 Nov 2020 |
Grant | Utility: Arc detection based on variance of current flow Filling date: 7 Sep 2025 Issue date: 13 Oct 2020 |
Grant | Utility: Surface mounted protection device Filling date: 7 Sep 2025 Issue date: 29 Sep 2020 |
Grant | Utility: PPTC composition and device having low switch temperature and sharp crystallization behaviour Filling date: 7 Sep 2025 Issue date: 22 Sep 2020 |
Grant | Utility: USB cable with thermal protection Filling date: 7 Sep 2025 Issue date: 15 Sep 2020 |
Grant | Utility: PPTC material with mixed conductive filler composition Filling date: 7 Sep 2025 Issue date: 15 Sep 2020 |
Grant | Utility: Lead and lead frame for power package Filling date: 7 Sep 2025 Issue date: 1 Sep 2020 |
Grant | Utility: Self-powered electronic fuse Filling date: 7 Sep 2025 Issue date: 1 Sep 2020 |
Grant | Utility: System and method for single wire ground check measurement Filling date: 7 Sep 2025 Issue date: 18 Aug 2020 |
Grant | Utility: Die stack assembly using an edge separation structure for connectivity through a die of the stack Filling date: 7 Sep 2025 Issue date: 4 Aug 2020 |
Grant | Utility: Discrete power transistor package having solderless DBC to leadframe attach Filling date: 7 Sep 2025 Issue date: 21 Jul 2020 |
Grant | Utility: Fast recovery inverse diode Filling date: 7 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: Magnetically activated switch having magnetostrictive material Filling date: 7 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: PPTC composition and device having thermal degradation resistance Filling date: 7 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: Self-powered electronic fuse with storage capacitor that charges with minimal disturbance of load current through the fuse Filling date: 7 Sep 2025 Issue date: 14 Jul 2020 |
Grant | Utility: Manufacturing method for foam fuse filler and cartridge fuse Filling date: 7 Sep 2025 Issue date: 16 Jun 2020 |
Grant | Utility: Methods for manufacturing an insulated busbar Filling date: 7 Sep 2025 Issue date: 16 Jun 2020 |
Grant | Utility: Wide operating range relay controller system Filling date: 7 Sep 2025 Issue date: 9 Jun 2020 |
Grant | Utility: Thin profile power semiconductor device package having face-to-face mounted dice and no internal bondwires Filling date: 7 Sep 2025 Issue date: 2 Jun 2020 |
Grant | Utility: Magnetoresistive sensors and switches from pre-bundled nanowires Filling date: 7 Sep 2025 Issue date: 28 Apr 2020 |
Grant | Utility: Multifunction wireless relay Filling date: 7 Sep 2025 Issue date: 28 Apr 2020 |
Grant | Utility: Flexible positive temperature coefficient device with battery management system Filling date: 7 Sep 2025 Issue date: 21 Apr 2020 |
Grant | Utility: Protection device and system using negative capacitance component Filling date: 7 Sep 2025 Issue date: 7 Apr 2020 |
Grant | Utility: Tuning fork terminal slow blow fuse Filling date: 7 Sep 2025 Issue date: 24 Mar 2020 |
Grant | Utility: Forward converter with self-driven BJT synchronous rectifier Filling date: 7 Sep 2025 Issue date: 24 Mar 2020 |
Grant | Utility: Disc fuse Filling date: 7 Sep 2025 Issue date: 25 Feb 2020 |
Grant | Utility: Fuse device having phase change material Filling date: 7 Sep 2025 Issue date: 11 Feb 2020 |
Grant | Utility: Fuse with arc-suppressing housing walls Filling date: 7 Sep 2025 Issue date: 4 Feb 2020 |
Grant | Utility: High-speed MOSFET and IGBT gate driver Filling date: 7 Sep 2025 Issue date: 14 Jan 2020 |
Grant | Utility: IGBT die structure with auxiliary P well terminal Filling date: 7 Sep 2025 Issue date: 14 Jan 2020 |
Grant | Utility: Optically isolated latching solid state relay with low on resistance and linear operation Filling date: 7 Sep 2025 Issue date: 31 Dec 2019 |
Grant | Utility: Surface mount fuse Filling date: 7 Sep 2025 Issue date: 26 Nov 2019 |
Grant | Utility: Integrated rain and solar radiation sensing module Filling date: 7 Sep 2025 Issue date: 26 Nov 2019 |
Grant | Utility: Fuses and methods of forming fuses Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: Vented power distribution housing Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: High-current fuse with endbell assembly Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: Inner cap for high voltage fuse Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: Hollow core magnetic position sensor Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: Power device cassette with auxiliary emitter contact Filling date: 7 Sep 2025 Issue date: 19 Nov 2019 |
Grant | Utility: USB cable with thermal protection Filling date: 7 Sep 2025 Issue date: 12 Nov 2019 |
Grant | Utility: Asymmetric transient voltage suppressor device and methods for formation Filling date: 7 Sep 2025 Issue date: 12 Nov 2019 |
Grant | Utility: Offset tuning fork contact terminals and methods of forming thereof Filling date: 7 Sep 2025 Issue date: 5 Nov 2019 |
Grant | Utility: Heat transfer plate having small cavities for taking up a thermal transfer material Filling date: 7 Sep 2025 Issue date: 15 Oct 2019 |
Showing 50 to 100 of 122 patents.