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Class Information
Number: 137/12
Name: Fluid handling > Processes > With control of flow by a condition or characteristic of a fluid > By fluid pressure
Description: Processes in which the condition or characteristic which is determined is a fluid pressure and the determination is used to cause delivery of controlled quantity of a fluent material at a part of the system.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8684021 Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device Apr. 1, 2014
8656938 Compressed gas tank system with fast fueling ability at any vessel pressure Feb. 25, 2014
8616228 Multi-stage ratio pressure regulator system Dec. 31, 2013
8596608 Sub sea hybrid valve actuator system and method Dec. 3, 2013
8578958 Leak mitigation for pressurized bi-directional systems Nov. 12, 2013
8561627 Calibration of a chemical dispense system Oct. 22, 2013
8555914 Method for autonomous control of a chemical injection systems for oil and gas wells Oct. 15, 2013
8517040 Valve control of pump inlet pressure with bootstrap reservoir Aug. 27, 2013
8479758 Methods and devices for reducing water consumption Jul. 9, 2013
8464741 Flow control method for multizone gas distribution Jun. 18, 2013
8445286 Flow cell for a flow cytometer system May. 21, 2013
8427327 Liquid flow measuring during buoy-loading Apr. 23, 2013
8397739 N-channel flow ratio controller calibration Mar. 19, 2013
8381756 Method for supplying gas Feb. 26, 2013
8375970 Valve system Feb. 19, 2013
8365753 Fluid flow controller Feb. 5, 2013
8336569 Mixing eductor Dec. 25, 2012
8286652 Configurable active jerk control Oct. 16, 2012
8262990 Flow cytometer system with unclogging feature Sep. 11, 2012
8240324 Method and apparatus for in situ testing of gas flow controllers Aug. 14, 2012
8240325 Gas flow device Aug. 14, 2012
8220479 Multi-stage ratio pressure regulator system Jul. 17, 2012
8215327 Diaphragm valve with electronic pressure detection Jul. 10, 2012
8215331 Leak mitigation for pressurized bi-directional systems Jul. 10, 2012
8196597 Check valve Jun. 12, 2012
8161993 Subsea system and method for protecting equipment of a subsea system Apr. 24, 2012
8156953 Method and device for regulating a pressure in a hydraulic system Apr. 17, 2012
8127783 Pressure-insensitive mass flow controller Mar. 6, 2012
8053249 Method of pumping fluid through a microfluidic device Nov. 8, 2011
8020573 Microfluidic channels and reservoirs in portable electronic devices Sep. 20, 2011
8020574 Method for closing fluid passage, and water hammerless valve device and water hammerless closing device used in the method Sep. 20, 2011
7931042 Vacuum suction system and method of controlling the same Apr. 26, 2011
7921001 Coupled algorithms on quadrilateral grids for generalized axi-symmetric viscoelastic fluid flows Apr. 5, 2011
7896954 Fluid storage and purification method and system Mar. 1, 2011
7890216 Control valve and positioner diagnostics Feb. 15, 2011
7878214 Ullage pressure regulator Feb. 1, 2011
7881886 Methods for performing transient flow prediction and verification using discharge coefficients Feb. 1, 2011
7814922 Apparatus for controlling the pressure in a process chamber and method of operating same Oct. 19, 2010
7780916 Flow cytometer system with unclogging feature Aug. 24, 2010
7763211 Method and apparatus for generating large pressures on a microfluidic chip Jul. 27, 2010
7753067 Shear valve employing two-stage poppet valve, particularly for use in fueling environments Jul. 13, 2010
7740024 System and method for flow monitoring and control Jun. 22, 2010
7716993 Gas flow rate verification unit May. 18, 2010
7706926 Adaptive feedback sources for application controllers Apr. 27, 2010
7666660 Method for mixing inside a capillary and devices for achieving same Feb. 23, 2010
7647136 Method and apparatus for enhancing operation of a fluid transport pipeline Jan. 12, 2010
7638058 Fluid storage and purification method and system Dec. 29, 2009
7640078 Multi-mode control algorithm Dec. 29, 2009
7617949 Flow volume limiting device Nov. 17, 2009
7600525 Leak detection and isolation for segmented inflatable structures Oct. 13, 2009

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