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Class Information
Number: 137/487.5
Name: Fluid handling > Line condition change responsive valves > Pilot or servo controlled > Electrically actuated valve
Description: Devices in which the valve is electrically actuated.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8689829 Fluid flow monitor Apr. 8, 2014
8689822 Pressure regulation in remote zones Apr. 8, 2014
8684021 Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device Apr. 1, 2014
8684028 Fuel quality traceable and remote system Apr. 1, 2014
8671973 Mass flow controller hysteresis compensation system and method Mar. 18, 2014
8671985 Control valve assembly Mar. 18, 2014
8662856 Pump control system Mar. 4, 2014
8656938 Compressed gas tank system with fast fueling ability at any vessel pressure Feb. 25, 2014
8651135 Mass flow controller, mass flow controller system, substrate processing device, and gas flow rate adjusting method Feb. 18, 2014
8655494 Fluid process control Feb. 18, 2014
8646748 Pressure regulator Feb. 11, 2014
8644996 Positioner Feb. 4, 2014
8641009 Positioner Feb. 4, 2014
8640724 Valve control system and valve control method Feb. 4, 2014
8616231 Valve device for a compressed air supply device and compressed air supply system Dec. 31, 2013
8615329 Control system for regulating liquid flow Dec. 24, 2013
8596293 Water appliance having a flow control unit and a filter assembly Dec. 3, 2013
8590561 Pressure sensor, differential pressure type flow meter, and flow rate controller Nov. 26, 2013
8584698 Programmable device for compressor valve Nov. 19, 2013
8578958 Leak mitigation for pressurized bi-directional systems Nov. 12, 2013
8579252 Actuator device having an open/close valve Nov. 12, 2013
8573247 Flow-rate controller, and regulator unit and valve unit used for the same Nov. 5, 2013
8573241 Systems and processes for field-initiated fluid regulation testing Nov. 5, 2013
8567062 Method for assembling an electromagnetic gas valve, and electromagnetic gas valve Oct. 29, 2013
8561627 Calibration of a chemical dispense system Oct. 22, 2013
8561636 System and method for leakage control and/or testing of piping and discharge points for non-compressible fluids Oct. 22, 2013
8555914 Method for autonomous control of a chemical injection systems for oil and gas wells Oct. 15, 2013
8550112 Multifunctional safety valve device with incorporated proportional pressure regulator Oct. 8, 2013
8549136 System for operating at least one non-safety-critical and at least one safety-critical process Oct. 1, 2013
8534182 Valvetrain oil control system and oil control valve Sep. 17, 2013
8528589 Manipulation of microfluidic droplets Sep. 10, 2013
8528590 Combination solenoid check valve Sep. 10, 2013
8522815 Gas shutoff device Sep. 3, 2013
8511337 Flow rate controller and proportional electromagnetic valve Aug. 20, 2013
8505872 Valve control apparatus and valve apparatus Aug. 13, 2013
8499786 Mass flow controller with enhanced operating range Aug. 6, 2013
8490645 Pressure sensor, pressure-differential flow rate meter, and flow rate controller Jul. 23, 2013
8490646 Diaphragm valve with mechanical pressure relief Jul. 23, 2013
8485219 Flow rate control using mass flow rate control device Jul. 16, 2013
8485211 Subsea valve Jul. 16, 2013
8479758 Methods and devices for reducing water consumption Jul. 9, 2013
8464751 Oxygen content adjustment apparatus and container data center including the same Jun. 18, 2013
8464741 Flow control method for multizone gas distribution Jun. 18, 2013
8464750 Magnetostrictive pressure regulating system Jun. 18, 2013
8459285 Slug mitigation Jun. 11, 2013
8453886 Device and method for discharging constant amount of high-viscosity material Jun. 4, 2013
8453688 Kit and device for connecting and transferring fluid and the use of said device Jun. 4, 2013
8453671 Apparatus for controlling internal pressure of hermetically sealed chamber Jun. 4, 2013
8453668 Vacuum relief valve Jun. 4, 2013
8439062 Flood preventing system, and method of use May. 14, 2013

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