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Class Information
Number: 73/64.52
Name: Measuring and testing > Liquid analysis or analysis of the suspension of solids in a liquid > Surface tension > Liquid droplet
Description: Subject matter wherein the determination is made by measuring a characteristic of liquid drops produced by flowing a liquid through an orifice.

Patents under this class:

Patent Number Title Of Patent Date Issued
8474306 Method and apparatus for measurement of fluid properties Jul. 2, 2013
8424369 Surface tension measuring device and method thereof Apr. 23, 2013
8272254 Device and method to measure wetting characteristics Sep. 25, 2012
8151635 Methods and device for fast creation of fluid interfaces and use of this device for determination of liquid-liquid and liquid-gas interfacial properties Apr. 10, 2012
8061187 Lossless droplet transfer of droplet-based microfluidic analysis Nov. 22, 2011
8041463 Modular droplet actuator drive Oct. 18, 2011
8029744 Method of liquid droplet formation and transport apparatus therefor and particle manipulating apparatus Oct. 4, 2011
7987700 Apparatus for measuring osmotic pressure, conductance, viscosity and surface tension of liquid solution Aug. 2, 2011
7975531 Microfluidic sensor for interfacial tension measurement and method for measuring interfacial tension Jul. 12, 2011
7952698 Method and device for contact angle determination from radius of curvature of drop by optical distance measurement May. 31, 2011
7845213 Volatile liquids having predetermined evaporation profiles Dec. 7, 2010
7822510 Systems, methods, and products for graphically illustrating and controlling a droplet actuator Oct. 26, 2010
7744833 Volatile liquids having predetermined evaporation profiles Jun. 29, 2010
7600416 Apparatus for measuring surface tension Oct. 13, 2009
7266995 Method and instrument for measuring surface tension Sep. 11, 2007
7155962 Method and apparatus to study a surfactant Jan. 2, 2007
7138155 Method for evaluating optical information medium and optical information medium Nov. 21, 2006
7025836 Modification of surfaces in order to increase the surface tension Apr. 11, 2006
6867854 Liquid to solid angle of contact measurement Mar. 15, 2005
6765662 Surface analysis Jul. 20, 2004
RE38129 Phase change analysis in logging method Jun. 3, 2003
6490916 Method and system of fluid analysis and control in a hydrocarbon well Dec. 10, 2002
6370947 Substrate surface analysis Apr. 16, 2002
6128949 Phase change analysis in logging method Oct. 10, 2000
5798455 Storehouse for use in storage of clean materials Aug. 25, 1998
5615276 Method of measuring low interfacial tension by pendant drop digitization Mar. 25, 1997
5583285 Method for detecting a coating material on a substrate Dec. 10, 1996
5559284 Method for determining elongational viscosity and dynamic surface tension in liquid solutions Sep. 24, 1996
5547566 Device for detecting and measuring continuously surfactant substances in water Aug. 20, 1996
5542289 Apparatus and method for the study of liquid-liquid interfacial rheology Aug. 6, 1996
5479816 Method of physical-chemical analysis based on the control of interface tensions, and corresponding apparatus Jan. 2, 1996
5269176 Method for determining liquid/liquid interfacial tension and dynamic interfacial tension reduction Dec. 14, 1993
5268733 Method and apparatus for measuring contact angles of liquid droplets on substrate surfaces Dec. 7, 1993
5218841 Apparatus and methods for determining liquid/liquid interfacial tension and dynamic interfacial tension reduction Jun. 15, 1993
5167144 Method and apparatus for the remote monitoring of fluids Dec. 1, 1992
5137352 Method and apparatus for determining the contact angle of liquid droplets on curved substrate surfaces Aug. 11, 1992
4970893 Tilt angle tester Nov. 20, 1990
4697451 Automated interfacial tensiometer Oct. 6, 1987
4650588 Surface tension detector for liquid chromatography Mar. 17, 1987
4646562 Method and apparatus for detecting relative dynamic liquid surface activity Mar. 3, 1987
4569226 Automated interfacial tensiometer Feb. 11, 1986
4523456 Determination of surface and interfacial tension Jun. 18, 1985
4361032 Apparatus for measuring surface tension Nov. 30, 1982
4228677 Method and means for measuring surface tension Oct. 21, 1980
4196615 Method and apparatus for field measurement of interfacial tension between immiscible fluids Apr. 8, 1980
4050822 Drop measuring apparatus, and a method of evaluating materials wettability Sep. 27, 1977

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