Invensil
Records under this name other than patents Invensil holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 5 of 5 · Back to Invensil
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,858,063 | High Purity Metallurgical Silicon and Method for Preparing Same Formerly held Lapsed on the fee record Ended Dec 28, 2022 · High confidence | Lapsed on the fee record | Ended Dec 28, 2022 | High confidence |
| US 7,404,941 | Medium purity metallurgical silicon and method for preparing same Formerly held Lapsed on the fee record Ended Jul 29, 2020 · From the USPTO record | Lapsed on the fee record | Ended Jul 29, 2020 | From the USPTO record |
| US 6,377,603 | System for the assembly of a self-baking composite electrode for electric arc furnaces Formerly held Term ended Term ended Jul 25, 2020 · From the USPTO record | Term ended | Term ended Jul 25, 2020 | From the USPTO record |
| US 6,916,356 | Method for preparing aluminum-silicon alloys Formerly held Lapsed on the fee record Ended Jul 12, 2017 · From the USPTO record | Lapsed on the fee record | Ended Jul 12, 2017 | From the USPTO record |
| US 7,108,734 | Silicon powder for preparing alkyl- or aryl-halogenosilanes Formerly held Lapsed on the fee record Ended Sep 19, 2014 · From the USPTO record | Lapsed on the fee record | Ended Sep 19, 2014 | From the USPTO record |