Hemlock Semiconductor Operations LLC
Records under this name other than the patents Hemlock Semiconductor Operations LLC 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 8 patents it holds.
Showing 1 to 8 of 8 · Back to Hemlock Semiconductor Operations LLC
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,267,574 | Heat Exchanger Formerly held In force · High confidence | In force | High confidence | |
| US 10,914,002 | Apparatus and Process for Semi-Continuous and Multi-Step Composite Production Formerly held In force · High confidence | In force | High confidence | |
| US 7,270,706 | Roll crusher to produce high purity polycrystalline silicon chips Term ended Term ended Dec 31, 2025 · From the USPTO record | Term ended | Term ended Dec 31, 2025 | From the USPTO record |
| US 10,345,211 | Method of determining a concentration of a material not dissolved by silicon etchants contaminating a product Lapsed on the fee record Ended Jul 9, 2023 · From the USPTO record | Lapsed on the fee record | Ended Jul 9, 2023 | From the USPTO record |
| US 10,265,671 | Tapered fluidized bed reactor and process for its use Lapsed on the fee record Ended Apr 23, 2023 · From the USPTO record | Lapsed on the fee record | Ended Apr 23, 2023 | From the USPTO record |
| US 9,909,231 | Flowable chips and methods for the preparation and use of same, and apparatus for use in the methods Formerly held Term ended Term ended Apr 16, 2023 · From the USPTO record | Term ended | Term ended Apr 16, 2023 | From the USPTO record |
| US 8,926,749 | Flowable Chips and Methods for the Preparation and Use of Same, and Apparatus for Use in the Methods Term ended Term ended Nov 14, 2022 · Medium confidence | Term ended | Term ended Nov 14, 2022 | Medium confidence |
| US 9,687,876 | Method of repairing and/or protecting a surface in a reactor Lapsed on the fee record Ended Jun 27, 2021 · From the USPTO record | Lapsed on the fee record | Ended Jun 27, 2021 | From the USPTO record |