Patents by Inventor Brian J. Jensen

Brian J. Jensen 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).

  • 5-(4-ethynylophenoxy)isophthalic chloride
    Patent number: 4622182
    Abstract: Sulfone-ester polymers containing pendent ethynyl groups and a direct and multi-step process for preparing same are disclosed. The multi-step process involves the conversion of a pendent bromo group to the ethynyl group while the direct route involves reacting hydroxy-terminated sulfone oligomer or polymers with a stoichiometric amount of 5-(4-ethynylphenoxy)isophthaloyl chloride. The 5-(4-ethynylphenoxy)isophthaloyl chloride and process for preparing same are also disclosed.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: November 11, 1986
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Paul M. Hergenrother, Brian J. Jensen
  • Sulfone-ester polymers containing pendent ethynyl groups
    Patent number: 4587312
    Abstract: Sulfone-ester polymers containing pendent ethynyl groups and a direct and multi-step process for preparing same are disclosed. The multi-step process involves the conversion of a pendent bromo group to the ethynyl group while the direct route involves reacting hydroxy-terminated sulfone oligomer or polymers with a stoichiometric amount of 5-(4-ethynylphenoxy)isophthaloyl chloride. The 5-(4-ethynylphenoxy)isophthaloyl chloride and process for preparing same are also disclosed.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: May 6, 1986
    Assignee: The United States of America as represented by the National Aeronautics and Space Administration
    Inventors: Paul M. Hergenrother, Brian J. Jensen
  • Sand core cleaning apparatus with double roller delivery of cleaning material
    Patent number: 4160650
    Abstract: A core cleaning material delivery unit for use in removing fins from foundry sand cores, including counter-rotating rollers rotatably engaging and defining a contact surface junction, means for feeding core cleaning material, such as metal shot or metal grit, above the junction, and means for rotating the rollers in opposite rotational directions away from the top of the contact surface junction to transport the shot or grit upwardly over each roller and deposit it as a double curtain of falling core cleaning material onto the sand cores.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: July 10, 1979
    Assignee: NFE International, Ltd.
    Inventor: Brian J. Jensen