Process Systems, Inc.
Records under this name other than patents Process Systems, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,059,535 | Pump with air purging and self-cleaning features Lapsed on the fee record Ended May 9, 2012 · From the USPTO record | Lapsed on the fee record | Ended May 9, 2012 | From the USPTO record |
| US 3,937,248 | Fluid flow control system employing a plurality of digital valve elements Term ended Term ended no later than Feb 10, 1996 · Low confidence | Term ended | Term ended no later than Feb 10, 1996 | Low confidence |
| US 3,942,553 | Digital fluid flow control system with trim adjustment Term ended Term ended no later than Mar 9, 1996 · Low confidence | Term ended | Term ended no later than Mar 9, 1996 | Low confidence |
| US 4,148,340 | Digital fluid flow control system Term ended Term ended no later than Apr 10, 1999 · Low confidence | Term ended | Term ended no later than Apr 10, 1999 | Low confidence |
| US 4,686,630 | Load management control system and method Formerly held Term ended Term ended no later than Aug 11, 2007 · Low confidence | Term ended | Term ended no later than Aug 11, 2007 | Low confidence |
| US 4,801,874 | Method and apparatus for measuring electricity Term ended Term ended no later than Jan 31, 2009 · Low confidence | Term ended | Term ended no later than Jan 31, 2009 | Low confidence |
| US 4,817,204 | Optical communication apparatus and method for telephone supervisory and audio signals Term ended Term ended no later than Mar 28, 2009 · Low confidence | Term ended | Term ended no later than Mar 28, 2009 | Low confidence |
| US 4,998,464 | Heat exchange device for food Term ended Term ended no later than Mar 12, 2011 · Low confidence | Term ended | Term ended no later than Mar 12, 2011 | Low confidence |
| US 5,147,179 | Turbine pump with multistage venting of lubricating fluid flow Term ended Term ended no later than Sep 15, 2012 · Low confidence | Term ended | Term ended no later than Sep 15, 2012 | Low confidence |
| US 5,627,759 | Electrical energy meters having real-time power quality measurement and reporting capability Formerly held Term ended Term ended no later than May 6, 2017 · Low confidence | Term ended | Term ended no later than May 6, 2017 | Low confidence |