Undersground Systems, Inc.
Records under this name other than patents Undersground Systems, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Undersground Systems, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,611,207 | Apparatus for monitoring voltage on a high voltage overhead transmission line Term ended Term ended no later than Sep 9, 2006 · Low confidence | Term ended | Term ended no later than Sep 9, 2006 | Low confidence |
| US 4,635,055 | Apparatus for measuring the temperature and other parameters of an electic power conductor Term ended Term ended no later than Jan 6, 2007 · Low confidence | Term ended | Term ended no later than Jan 6, 2007 | Low confidence |
| US 4,689,752 | System and apparatus for monitoring and control of a bulk electric power delivery system Term ended Term ended no later than Aug 25, 2007 · Low confidence | Term ended | Term ended no later than Aug 25, 2007 | Low confidence |
| US 4,714,893 | Apparatus for measuring the potential of a transmission line conductor Term ended Term ended no later than Dec 22, 2007 · Low confidence | Term ended | Term ended no later than Dec 22, 2007 | Low confidence |
| US 4,723,220 | Apparatus for power measuring and calculating Fourier components of power line parameters Term ended Term ended no later than Feb 2, 2008 · Low confidence | Term ended | Term ended no later than Feb 2, 2008 | Low confidence |
| US 4,724,381 | RF antenna for transmission line sensor Term ended Term ended no later than Feb 9, 2008 · Low confidence | Term ended | Term ended no later than Feb 9, 2008 | Low confidence |
| US 4,746,241 | Hinge clamp for securing a sensor module on a power transmission line Term ended Term ended no later than May 24, 2008 · Low confidence | Term ended | Term ended no later than May 24, 2008 | Low confidence |
| US 4,758,962 | Electrical power line and substation monitoring apparatus and systems Term ended Term ended no later than Jul 19, 2008 · Low confidence | Term ended | Term ended no later than Jul 19, 2008 | Low confidence |
| US 4,777,381 | Electrical power line and substation monitoring apparatus and systems Term ended Term ended no later than Oct 11, 2008 · Low confidence | Term ended | Term ended no later than Oct 11, 2008 | Low confidence |
| US 4,786,862 | Watchdog circuit for transmission line sensor module Term ended Term ended no later than Nov 22, 2008 · Low confidence | Term ended | Term ended no later than Nov 22, 2008 | Low confidence |