Keithley Instruments, LLC
Records under this name other than the patents Keithley Instruments, 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 100 patents it holds.
Back to Keithley Instruments, LLC
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,170,543 | Code Domain Power Display Formerly held In force · High confidence | In force | High confidence | |
| US 7,778,318 | OFDM Gain Compression Measurement Formerly held In force · High confidence | In force | High confidence | |
| US 9,225,350 | Low Noise Frequency Source Formerly held Term ended Term ended Aug 16, 2026 · High confidence | Term ended | Term ended Aug 16, 2026 | High confidence |
| US 7,414,414 | Spatially distributed guarded impedance Term ended Term ended Jul 19, 2026 · From the USPTO record | Term ended | Term ended Jul 19, 2026 | From the USPTO record |
| US 7,388,366 | Test system connection system with triaxial cables Term ended Term ended Apr 30, 2026 · From the USPTO record | Term ended | Term ended Apr 30, 2026 | From the USPTO record |
| US 7,342,401 | Measurement bias tee Term ended Term ended Jul 8, 2025 · From the USPTO record | Term ended | Term ended Jul 8, 2025 | From the USPTO record |
| US 7,680,619 | Parallel test architecture Term ended Term ended May 31, 2025 · From the USPTO record | Term ended | Term ended May 31, 2025 | From the USPTO record |
| US 7,202,676 | Source measure circuit Term ended Term ended Feb 28, 2025 · From the USPTO record | Term ended | Term ended Feb 28, 2025 | From the USPTO record |
| US 7,276,893 | Automatic ranging current shunt Term ended Term ended Feb 28, 2025 · From the USPTO record | Term ended | Term ended Feb 28, 2025 | From the USPTO record |
| US 7,240,258 | Parallel test system and method Term ended Term ended Apr 20, 2024 · From the USPTO record | Term ended | Term ended Apr 20, 2024 | From the USPTO record |