KELK Ltd.
Records under this name other than the patents KELK Ltd. 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 62 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 12,444,626 | Temperature Control Device for Semiconductor Wafer and Temperature Control Method for Semiconductor Wafer Formerly held In force · High confidence | In force | High confidence | |
| US 11,387,119 | Fluid Heating Device Lapsed on the fee record Ended Jul 12, 2026 · High confidence | Lapsed on the fee record | Ended Jul 12, 2026 | High confidence |
| US 11,387,398 | Thermoelectric Power Generation Module Lapsed on the fee record Ended Jul 12, 2026 · High confidence | Lapsed on the fee record | Ended Jul 12, 2026 | High confidence |
| US 9,871,179 | Thermoelectric power module Lapsed on the fee record Ended Jan 16, 2026 · From the USPTO record | Lapsed on the fee record | Ended Jan 16, 2026 | From the USPTO record |
| US 8,600,543 | Apparatus and Method for Controlling Temperature of Semiconductor Wafers Lapsed on the fee record Ended Dec 3, 2025 · High confidence | Lapsed on the fee record | Ended Dec 3, 2025 | High confidence |
| US 9,752,806 | Temperature adjustment apparatus Lapsed on the fee record Ended Sep 5, 2025 · From the USPTO record | Lapsed on the fee record | Ended Sep 5, 2025 | From the USPTO record |
| US 9,484,231 | Temperature controller for semiconductor manufacturing equipment, method for calculating PID constants in semiconductor manufacturing, and method for operating temperature controller for semiconductor manufacturing equipment Lapsed on the fee record Ended Nov 1, 2024 · From the USPTO record | Lapsed on the fee record | Ended Nov 1, 2024 | From the USPTO record |
| US 10,497,547 | Temperature control device Lapsed on the fee record Ended Dec 3, 2023 · From the USPTO record | Lapsed on the fee record | Ended Dec 3, 2023 | From the USPTO record |
| US 9,062,894 | Fluid heating device Lapsed on the fee record Ended Jun 23, 2023 · From the USPTO record | Lapsed on the fee record | Ended Jun 23, 2023 | From the USPTO record |
| US 9,793,462 | Thermoelectric module, thermoelectric power generating apparatus, and thermoelectric generator Lapsed on the fee record Ended Oct 17, 2021 · From the USPTO record | Lapsed on the fee record | Ended Oct 17, 2021 | From the USPTO record |