Penberthy, Inc.
Records under this name other than patents Penberthy, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 7 of 7 · Back to Penberthy, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,390,016 | Sight flow indicator Lapsed on the fee record Ended May 21, 2010 · From the USPTO record | Lapsed on the fee record | Ended May 21, 2010 | From the USPTO record |
| US 4,561,305 | Liquid sight gage cover Term ended Term ended no later than Dec 31, 2005 · Low confidence | Term ended | Term ended no later than Dec 31, 2005 | Low confidence |
| US 5,461,321 | Apparatus and method for measuring capacitance from the duration of a charge-discharge charge cycle Term ended Term ended no later than Oct 24, 2015 · Low confidence | Term ended | Term ended no later than Oct 24, 2015 | Low confidence |
| US 5,465,041 | Bipolar tracking current source/sink with ground clamp Term ended Term ended no later than Nov 7, 2015 · Low confidence | Term ended | Term ended no later than Nov 7, 2015 | Low confidence |
| US 5,481,197 | High pressure, leak resistant explosionproof capacitance probe Term ended Term ended no later than Jan 2, 2016 · Low confidence | Term ended | Term ended no later than Jan 2, 2016 | Low confidence |
| US 5,554,937 | Apparatus and method for sensing material level by capacitance measurement Term ended Term ended no later than Sep 10, 2016 · Low confidence | Term ended | Term ended no later than Sep 10, 2016 | Low confidence |
| US 5,895,058 | Laminated gasket Term ended Term ended no later than Apr 20, 2019 · Low confidence | Term ended | Term ended no later than Apr 20, 2019 | Low confidence |