Electromagnetic Instruments, Inc.
Records under this name other than patents Electromagnetic Instruments, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 3 of 3 · Back to Electromagnetic Instruments, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,577,284 | Component field antenna for induction borehole logging Term ended Term ended Apr 26, 2021 · From the USPTO record | Term ended | Term ended Apr 26, 2021 | From the USPTO record |
| US 6,294,917 | Electromagnetic induction method and apparatus for the measurement of the electrical resistivity of geologic formations surrounding boreholes cased with a conductive liner Term ended Term ended Sep 13, 2019 · From the USPTO record | Term ended | Term ended Sep 13, 2019 | From the USPTO record |
| US 5,130,655 | Multiple-coil magnetic field sensor with series-connected main coils and parallel-connected feedback coils Term ended Term ended no later than Jul 14, 2012 · Low confidence | Term ended | Term ended no later than Jul 14, 2012 | Low confidence |