Patents by Inventor Felix Alfred Streiff

Felix Alfred Streiff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for blending fluids of widely differing viscosities
    Patent number: 6698917
    Abstract: A process is provided for blending two fluids having widely differing viscosities, such that the ratio of the two viscosities is at least 10,000:1. The low viscosity fluid is injected into the high viscosity fluid as it flows through a conduit, such that the low viscosity fluid is at least 30% by weight of the total weight of the low viscosity fluid and the high viscosity fluid. The two fluids are then forwarded to a second conduit containing a first set of static mixing elements providing a fluid shear rate in excess of 0.57 sec−1. The two fluids are then further forwarded to a third conduit containing a second set of static mixing elements of a larger diameter than the first set, providing a fluid shear rate in excess of 0.20 sec−1. Within the third conduit the two fluids form a homogeneous blend.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: March 2, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Arthur William Etchells, III, Charles Linfred Henderson, Felix Alfred Streiff, Andreas Walder
  • Process for blending fluids of widely differing viscosities
    Publication number: 20030095473
    Abstract: A process is provided for blending two fluids having widely differing viscosities, such that the ratio of the two viscosities is at least 10,000:1. The low viscosity fluid is injected into the high viscosity fluid as it flows through a conduit, such that the low viscosity fluid is at least 30% by weight of the total weight of the low viscosity fluid and the high viscosity fluid. The two fluids are then forwarded to a second conduit containing a first set of static mixing elements providing a fluid shear rate in excess of 0.57 sec−1. The two fluids are then further forwarded to a third conduit containing a second set of static mixing elements of a larger diameter than the first set, providing a fluid shear rate in excess of 0.20 sec−1. Within the third conduit the two fluids form a homogeneous blend.
    Type: Application
    Filed: May 31, 2002
    Publication date: May 22, 2003
    Inventors: Arthur William Etchells, Charles Linfred Henderson, Felix Alfred Streiff, Andreas Walder