Douglas A. Stephens

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Cary, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Methods and systems for overcurrent protection in a fire pump contr...
- Patent number 10,406,392
- Issue date Sep 10, 2019
- ASCO Power Technologies, L.P.
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Systems and methods of controlling pressure maintenance pumps and d...
- Patent number 10,240,593
- Issue date Mar 26, 2019
- ASCO Power Technologies, L.P.
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Fire pump room system integrator
- Patent number 10,179,256
- Issue date Jan 15, 2019
- ASCO Power Technologies, L.P.
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Dual redundancy in fire pump controllers
- Patent number 9,482,220
- Issue date Nov 1, 2016
- ASCO Power Technologies, L.P.
- Douglas A. Stephens
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Methods and systems for monitoring a power supply for a fire pump m...
- Patent number 9,453,505
- Issue date Sep 27, 2016
- ASCO Power Technologies, L.P.
- Douglas A. Stephens
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Methods and Systems for Overcurrent Protection in a Fire Pump Contr...
- Publication number 20160375289
- Publication date Dec 29, 2016
- ASCO Power Technologies, LP
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Fire Pump Room System Integrator
- Publication number 20140303794
- Publication date Oct 9, 2014
- ASCO Power Technologies, LP
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Methods and Systems for Monitoring a Power Supply for a Fire Pump M...
- Publication number 20130343910
- Publication date Dec 26, 2013
- ASCO Power Technologies, LP
- Douglas A. Stephens
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Dual Redundancy in Fire Pump Controllers
- Publication number 20130343911
- Publication date Dec 26, 2013
- ASCO Power Technologies, LP
- Douglas A. Stephens
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Systems and Methods of Controlling Pressure Maintenance Pumps and D...
- Publication number 20120230846
- Publication date Sep 13, 2012
- Douglas A. Stephens
- A62 - LIFE-SAVING FIRE-FIGHTING