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| Number | Title | Issue Date |
| 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 Methods for fast fresh surface formation between two fluids as well as a device employing this method to measure dynamic or equilibrium interfacial tension between the fluids. ... | 04/10/2012 |
| 7975531 | Microfluidic sensor for interfacial tension measurement and method for measuring interfacial tension A microfluidic sensor is disclosed that has a first inlet channel for a first fluid, a second inlet channel for a second fluid, and a measurement channel intersecting with both first inlet channel and the second inlet channel. A signal source system is provided for ... | 07/12/2011 |
| 7845213 | Volatile liquids having predetermined evaporation profiles Dispensers and refills for volatile liquids, such as fragrances, are disclosed. Dispensers and refills in combination with dispensers according to the present invention may comprise a volatile liquid and a housing. In certain embodiments, the volatile liquid of the ... | 12/07/2010 |
| 7600416 | Apparatus for measuring surface tension An apparatus for measuring surface tension includes: a U-shaped communicating tube having a base section that defines a horizontal line, and first and second sections that extend from the base section, and that respectively have first and second top open ends distal... | 10/13/2009 |
| 7266995 | Method and instrument for measuring surface tension For measuring the surface tension between a liquid and fluid such as a gas, a capillary (3, 3′) is used in which the liquid slowly flows and at the end of which drops (11) are formed, falling off into a closed space (7) containing the fluid. U... | 09/11/2007 |
| 7155962 | Method and apparatus to study a surfactant The invention relates to a method of and an apparatus for studying properties, especially physical properties of a surfactant. A fluid is introduced in the form of a sample volume in another fluid which is immiscible with said fluid so that an interface is formed be... | 01/02/2007 |
| 7138155 | Method for evaluating optical information medium and optical information medium A simple method for evaluating an optical information medium by judging quantitatively and reproducibly the surface quality of the optical information medium by the use of an artificial fingerprint liquid as an evaluation dispersion liquid, is provided. An optical i... | 11/21/2006 |
| 7118709 | Method and apparatus for tempering specimens A method for tempering at least one sample wherein an plastic-based electrically conductive material of a specimen carrier consisting at least partially of this material for at least one specimen is applied to by an electric current/an electric voltage which causes ... | 10/10/2006 |
| 7025836 | Modification of surfaces in order to increase the surface tension A process is provided for the production of a surface coating as well as the use of surface coatings to increase the surface tension of objects. The surface coating is obtained by depositing a layer of at least one element that can be oxidized with water or an alloy... | 04/11/2006 |
| 6867854 | Liquid to solid angle of contact measurement A liquid to solid material surface contact angle measurement system operating by way of detecting a transition in the behavior of a liquid sample with the solid material in a changing angular confinement environment along with use of a mathematical algorithm to then... | 03/15/2005 |
| 6765662 | Surface analysis A method and apparatus for estimating the adhesion properties of a surface of an article by holding the article so that the surface is facing downwards and placing a droplet of liquid against the surface. The volume of the droplet is incremented until the droplet re... | 07/20/2004 |
| 6490916 | Method and system of fluid analysis and control in a hydrocarbon well A system and method of fluid analysis in a hydrocarbon borehole is disclosed. Acoustic energy is emitted into the production fluid downhole at a level which causes a phase transition in the fluid. The pressure associated with the phase transition is deter... | 12/10/2002 |
| 6370947 | Substrate surface analysis A method and apparatus for estimating the degree of cleanliness of a substrate surface by measuring the surface wettability, particularly of an inorganic surface used in the manufacturing of electronic components. The wettability of the substrate surface ... | 04/16/2002 |
| 6128949 | Phase change analysis in logging method An improved method of fluid analysis in the borehole of a well. A fluid sampling tool is fitted with a pumpout module that can be used to draw fluids from the formation, circulate them through the instrument, and then expel this fluid to the borehole. It ... | 10/10/2000 |
| 5798455 | Storehouse for use in storage of clean materials A storehouse is constituted including a clean room 12 and a storage space 10 for storing clean materials, which is isolated from the clean room. The clean air for storage is generated by a storage air generator 36 and is supplied to the storage space 10 t... | 08/25/1998 |
| 5615276 | Method of measuring low interfacial tension by pendant drop digitization The present invention is related to a method of measuring low interfacial tension of a two-phase fluid system by pendant drop digitization, in which a silhouette of a pendant drop is created and photographed, its video image is digitized, and a plurality ... | 03/25/1997 |
| 5583285 | Method for detecting a coating material on a substrate A method for detecting the presence of a coating material, particularly an organic solderability preservative, such as imidazole, on a copper substrate includes placing a test droplet on the surface of the substrate, forming an image of the droplet and me... | 12/10/1996 |
| 5559284 | Method for determining elongational viscosity and dynamic surface tension in liquid solutions Disclosed is a method for measuring intermolecular force related physical properties of an objective liquid such as elongational viscosity and dynamic surface tension, comprising the steps of atomizing neat liquids to a particle size in a gaseous fluid st... | 09/24/1996 |
| 5542289 | Apparatus and method for the study of liquid-liquid interfacial rheology The apparatus and method of the present invention relate to a novel procedure for measuring the interfacial thinning that occurs during a droplet-liquid phase coalescence event. As an example, an aqueous drop is grown at the tip of a capillary submerged i... | 08/06/1996 |
| 5479816 | Method of physical-chemical analysis based on the control of interface tensions, and corresponding apparatus Process and apparatus for analyzing the characteristics of a liquid/fluid interface, especially in the presence of surface-active agents. A tensiometer operates according to the principle of the suspended drop and the amount of liquid injected in the drop... | 01/02/1996 |
| 5269176 | Method for determining liquid/liquid interfacial tension and dynamic interfacial tension reduction A method is disclosed for providing data useful in evaluating the dynamics of surfactants used to reduce interfacial tension in a system having two immiscible liquids and one or more surfactants. The method involves rapidly growing a drop of a first liqui... | 12/14/1993 |
| 5268733 | Method and apparatus for measuring contact angles of liquid droplets on substrate surfaces A method and apparatus for determining the contact angle of a droplet of test liquid on a substrate surface. The apparatus includes a test article support plate, a pipette for depositing a droplet of test liquid onto a substrate surface of the test articl... | 12/07/1993 |
| 5218841 | Apparatus and methods for determining liquid/liquid interfacial tension and dynamic interfacial tension reduction Apparatus and methods for determining the liquid/liquid interfacial tension between immiscible liquids wherein a first liquid is introduced into a second liquid at a constant rate of flow sufficient to produce successive, uniform size drops which ascend o... | 06/15/1993 |
| 5167144 | Method and apparatus for the remote monitoring of fluids The present invention provides a method and apparatus for measuring, particularly remotely, a first composition-dependent physical property, such as bubble rise velocity or dynamic viscosity, of a fluid comprising a container for holding the fluid at a ce... | 12/01/1992 |
| 5137352 | Method and apparatus for determining the contact angle of liquid droplets on curved substrate surfaces A method and apparatus adapted for the rapid, accurate and repeatable determination of contact angles of liquid droplets applied to curved substrate surfaces. The apparatus includes a support upon which an article may be mounted with the curved substrate ... | 08/11/1992 |
| 4970893 | Tilt angle tester An apparatus for measuring the surface of a substrate has a normally horizontal surface for mounting a solid thereon, a device for rotating the surface and a counter synchronized with the rotational device to indicate the amount of rotation and a switch f... | 11/20/1990 |
| 4697451 | Automated interfacial tensiometer The interfacial tension in a liquid-liquid system is determined by estimating the flow rate of the heavier liquid as it is discharged under constant head through a capillary immersed in a body of the lighter liquid, or conversely, of the lighter liquid as... | 10/06/1987 |
| 4650588 | Surface tension detector for liquid chromatography A device for detecting changes in surface tension of eluant from a liquid chromatography column has in a preferred embodiment an arrangement for suspending a droplet of liquid eluting from a liquid chromatography column, a pair of electrodes in contact wi... | 03/17/1987 |
| 4646562 | Method and apparatus for detecting relative dynamic liquid surface activity A method and apparatus for continuous monitoring of the relative dynamic surface activity of a liquid in which the surface activity can be rapidly changing is disclosed. The liquid is flowed through an orifice at a constant volume flow rate to produce liq... | 03/03/1987 |
| 4569226 | Automated interfacial tensiometer The interfacial tension in a liquid-liquid system is determined by estimating the flow rate of the heavier liquid as it is discharged under constant head through a capillary immersed in a body of the lighter liquid. A known voltage is applied to each drop... | 02/11/1986 |
| 4523456 | Determination of surface and interfacial tension The determination of the surface tension of a liquid or of the interfacial tension between two immiscible liquids is effected by drainage methods in which the movement of an air bubble or a droplet of the lighter liquid is observed, certain measurements m... | 06/18/1985 |
| 4361032 | Apparatus for measuring surface tension An apparatus for automatically determining the surface tension by the stalagmometer principle using a pipette containing a test volume, having a drop face at its lower end and is provided with three light barriers. The three light barriers are connected t... | 11/30/1982 |
| 4228677 | Method and means for measuring surface tension A method and means of measuring the surface tension of a liquid wherein the liquid is discharged from a liquid container by a pump. After passage through a discharge pipe, the discharged liquid enters a nozzle in which stable drops of liquid are formed. I... | 10/21/1980 |
| 4196615 | Method and apparatus for field measurement of interfacial tension between immiscible fluids A tensiometer apparatus for use in the field, for instance at the site of an oil well, for measuring the interfacial tension between two immiscible fluids, for instance oil and water, wherein a droplet of one fluid is caused to move under the force of gra... | 04/08/1980 |
| 4050822 | Drop measuring apparatus, and a method of evaluating materials wettability The apparatus comprises means usable in the novel method for evaluating materials wettability, as well as measuring the contact angle of a liquid drop, the same comprising a structure for measuring the height of a drop deposited on a material, in that the... | 09/27/1977 |
