Elkcorp
Records under this name other than the patents Elkcorp 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 1 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,822,355 | Fire resistant composite material and fabrics made therefrom Lapsed on the fee record Ended Sep 2, 2026 · Medium confidence | Lapsed on the fee record | Ended Sep 2, 2026 | Medium confidence |
| US 9,435,074 | Fire resistant composite material and fabrics made therefrom Term ended Term ended Feb 4, 2026 · From the USPTO record | Term ended | Term ended Feb 4, 2026 | From the USPTO record |
| US 8,822,356 | Fire Resistant Composite Material And Fabrics Made Therefrom Term ended Term ended Jun 9, 2025 · Medium confidence | Term ended | Term ended Jun 9, 2025 | Medium confidence |
| US 8,987,149 | Fire Resistant Composite Material And Fabrics Made Therefrom Term ended Term ended Jun 9, 2025 · Low confidence | Term ended | Term ended Jun 9, 2025 | Low confidence |
| US 7,204,100 | Natural Gas Liquefaction Formerly held Term ended Term ended Jun 7, 2025 · High confidence | Term ended | Term ended Jun 7, 2025 | High confidence |
| US 7,361,617 | Fire Resistant Composite Material and Fabrics Therefrom Term ended Ended no later than Mar 22, 2025 · Medium confidence | Term ended | Ended no later than Mar 22, 2025 | Medium confidence |
| US 7,155,931 | Liquefied Natural Gas Processing Formerly held Term ended Term ended Jan 3, 2025 · High confidence | Term ended | Term ended Jan 3, 2025 | High confidence |
| US 6,945,075 | Natural Gas Liquefaction Formerly held Term ended Term ended Sep 17, 2023 · High confidence | Term ended | Term ended Sep 17, 2023 | High confidence |
| US 8,030,229 | Composite Material Term ended Ended no later than Aug 10, 2022 · Low confidence | Term ended | Ended no later than Aug 10, 2022 | Low confidence |
| US 8,017,531 | Composite Material Term ended Ended no later than Jul 16, 2022 · Low confidence | Term ended | Ended no later than Jul 16, 2022 | Low confidence |