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Prof. Joseph's US Patents page

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  US Patent No. Title of Patent Date of Patent
  4,602,502 Wave-speed meter July 29, 1982
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Inventors: Daniel D Joseph, Oliver Riccius

Assignee: Regents of the University of Minnesota,
  Minneapolis, MN

A wave speed meter comprises a pair of relatively rotatable, concentric cylinders with a gap between the cylinders to define a chamber. A viscoelastic fluid is placed in the chamber, and one of the cylinders is suddenly rotationally displaced causing a shear induced wave to be propagated through the fluid filling the chamber between the cylinders...

 
  4,644,782 Spinning rod interfacial tensiometer Feb 24, 1987
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Inventors: Daniel D Joseph

Assignee: Regents of the University of Minnesota,
  Minneapolis, MN

A transparent cylinder is filled with two liquids of different densities and is sealed at both ends. A rod, having a diameter smaller than the inner diameter of the cylinder is mounted on the longitudinal axis of the cylinder. The filled cylinder is mounted horizontally ...

 
  5,150,607 Spinning drop tensioextensiometer Sep 29, 1992
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Inventors: Daniel D Joseph, Dave A Hultman

Assignee: Daniel D Joseph, Minneapolis, MN

A spinning drop tensioextensiometer provides for the ability to rotate a tube carrying two different polymers, under conditions which keep the polymers melted, and which causes the less dense polymer to form a drop of a generlly cigar shape.

 
  5,301,541 Drag determining apparatus Apr 12, 1994
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Inventors: Daniel D Joseph, Francis J Marentic, Clement A Nelson

An apparatus and method for determining the effect of the configuration of an outer surface of an object on the drag of the object. The apparatus comprises a housing, an inner block suspended in the housing, a motor for rotating the housing, and a torquemeter.

 
  5,385,175 Conduit having hydrophilic and oleophobic inner surfaces for oil transportation, Jan 31, 1995
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Inventors: Mayela Rivero, Valmore Rodriquez, Daniel D. Joseph, Emilio Guevara, Nelson Carabaño.

Assignee: Intevep, S.A.

A conduit for transporting an oil and water mixture wherein the conduit has an innner surface is substantially hydrophilic and oleophobic. The surface is characterized by a water absorption capacity of greater than or equal to about 8% by weight, and by a contact angle ...

 
  5,646,352 Method and apparatus for measuring a parameter of a multiphase flow Jul 8, 1997
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Inventors: Daniel D. Joseph, Runyuan Bai

The present invention comprises a method of measuring a parameter of a multiphase flow of a fluid. The apparatus comprises a buffer chamber apparatus that is operably fluidly coupled to a pipe bearing a fluid comprised of components of different densities...

 
  5,922,190 Process for suppressing foam formation in a bubble column reactor Jul 13, 1999
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Inventors: Jose Guitian, Daniel D. Joseph, Julio Krasuk

Assignee: Intevep, S.A.

A process for suppressing foam formation in a bubble column reactor includes the steps of feeding a liquid and a gas to a reactor at a liquid velocity and a gas velocity respectively; and adding particles of a solid material to the liquid, wherein the particles are wettable by the liquid, and whereby the foam formation in the reactor is suppressed.

 
  5,922,191 Foam control using a fluidized bed of particles Jul 13, 1999
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Inventors: Clara Mata, Jose Guitian, Daniel D. Joseph, Julio Krasuk

Assignee: Intevep, S.A.

A process for suppressing foam formation in a vessel includes the steps of feeding a liquid and a gas to a vessel at a liquid velocity and a gas velocity respectively; adding particles of a solid material to the liquid, the particles having a particle size and a particle density; and selecting at least one of the liquid velocity, particle size and particle density so as to fluidize the particles in the liquid, whereby foam formation in the vessel is suppressed. The particles are preferably liquid phase phobic particles.

 
  5,987,969 Apparatus and method for determining dynamic stability of emulsions Nov 23, 1999
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Inventors: Daniel D. Joseph, Geoffrey McGrath, Gustavo Nuñez, Pedro J. Ortega

Assignee: Intevep, S.A.

An apparatus for characterizing dynamic stability of an emulsion includes a test vessel, a gap within the test vessel defined between a stationary surface and a moving surface; and an inlet for feeding an emulsion through the gap within the test vessel, whereby dynamic stability of the emulsion can be characterized based upon cycles of flow through the test vessel. Methods for characterizing dynamic stability are also disclosed.

 
  5,988,198 Process for pumping bitumen froth through a pipeline Nov 23, 1999
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Inventors: Owen Nieman, Ken Sury, Daniel D. Joseph, Runyuan Bai, Christopher Grant

Assignee: AEC Oil Sands, L.P., AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments Inc., Canadian Occidental Petroleum Ltd., Canadian Oil Sands Investments Inc., Gulf Canada Resourses Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company Ltd, Petro-Canada.

A process for transporting deaerated bitumen froth in a pipeline is described which comprises injecting water into the pipeline prior to deaerated bitumen froth injection to wet the interior walls of the pipeline.

 
       

Last Modified: 2011-12-14 at 13:32:17 -- this is in International Standard Date and Time Notation