Amptech Incorporated
Records under this name other than patents Amptech Incorporated 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 Amptech Incorporated
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,770,919 | Indium phosphide heterojunction bipolar transistor layer structure and method of making the same Lapsed on the fee record Ended Aug 3, 2012 · From the USPTO record | Lapsed on the fee record | Ended Aug 3, 2012 | From the USPTO record |
| US 6,727,530 | Integrated photodetector and heterojunction bipolar transistors Lapsed on the fee record Ended Apr 27, 2012 · From the USPTO record | Lapsed on the fee record | Ended Apr 27, 2012 | From the USPTO record |
| US 7,233,208 | Bias compensation circuit for RF power amplifier Lapsed on the fee record Ended Jun 19, 2011 · From the USPTO record | Lapsed on the fee record | Ended Jun 19, 2011 | From the USPTO record |
| US 7,115,918 | Collector layer structure for a double hetero-junction bipolar transistor for power amplification applications Formerly held Lapsed on the fee record Ended Oct 3, 2010 · From the USPTO record | Lapsed on the fee record | Ended Oct 3, 2010 | From the USPTO record |
| US 7,064,614 | Current mirror biasing circuit with power control for HBT power amplifiers Lapsed on the fee record Ended Jun 20, 2010 · From the USPTO record | Lapsed on the fee record | Ended Jun 20, 2010 | From the USPTO record |