H.E.F.
Records under this name other than the patents H.E.F. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 38 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,283,322 | Method and Device for Generating a Plasma Excited by a Microwave Energy in the Electron Cyclotron Resonance (ECR) Domain, in Order to Carry Out a Surface Treatment or Produce a Coating Around a Filiform Element Formerly held In force · High confidence | In force | High confidence | |
| US 10,900,522 | Self-lubricating composite friction part Formerly held In force · From the USPTO record | In force | From the USPTO record | |
| US 11,594,735 | Metal Foil for Electrochemical Element Electrode Comprising a Material Based on Ti, C and H Formerly held In force · High confidence | In force | High confidence | |
| US 7,886,686 | Installation for the vacuum treatment in particular of substrates Term ended Term ended Sep 17, 2024 · From the USPTO record | Term ended | Term ended Sep 17, 2024 | From the USPTO record |
| US 7,235,162 | Cathode for vacuum sputtering treatment machine Term ended Term ended Jan 10, 2024 · From the USPTO record | Term ended | Term ended Jan 10, 2024 | From the USPTO record |
| US 7,632,383 | Vacuum sputtering cathode Term ended Term ended Jul 8, 2023 · From the USPTO record | Term ended | Term ended Jul 8, 2023 | From the USPTO record |
| US 6,746,546 | Low temperature nitriding salt and method of use Term ended Term ended Mar 17, 2022 · From the USPTO record | Term ended | Term ended Mar 17, 2022 | From the USPTO record |
| US 8,562,812 | Sulphuration method of ferrous alloy parts in an aqueous solution Lapsed on the fee record Ended Oct 22, 2021 · From the USPTO record | Lapsed on the fee record | Ended Oct 22, 2021 | From the USPTO record |
| US 6,403,490 | Method of producing a plasma by capacitive-type discharges with a multipole barrier, and apparatus for implementing such a method Term ended Term ended Oct 19, 2020 · From the USPTO record | Term ended | Term ended Oct 19, 2020 | From the USPTO record |
| US 6,407,359 | Method of producing individual plasmas in order to create a uniform plasma for a work surface, and apparatus for producing such a plasma Term ended Term ended Aug 2, 2020 · From the USPTO record | Term ended | Term ended Aug 2, 2020 | From the USPTO record |