Patents by Inventor Harold K. Lonsdale

Harold K. Lonsdale 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).

  • Physicochemically functional ultrathin films by interfacial polymerization
    Patent number: 4948506
    Abstract: Interfacially-polymerized ultrathin films containing physicochemically functional groups are disclosed, both with and without supports. Various applications are disclsoed, including membrane electrodes, selective membranes and sorbents, biocompatible materials, targeted drug delivery, and narrow band optical absorbers.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: August 14, 1990
    Assignee: Bend Research, Inc.
    Inventors: Harold K. Lonsdale, Walter C. Babcock, Dwayne T. Friensen, Kelly L. Smith, Bruce M. Johnson, Carl C. Wamser
  • Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers
    Patent number: 4917800
    Abstract: The preparation of a novel class of thin film membranes by interfacial polymerization is disclosed, said membranes incorporating as part of their polymeric structure the functionality of monomeric or oligomeric precursors. Specific embodiments include porphyrin and phthalocyanine derivatives that are photochemically or electrochemically active, as well as chemically asymmetric membranes.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: April 17, 1990
    Assignee: Bend Research, Inc.
    Inventors: Harold K. Lonsdale, Carl C. Wamser
  • Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers
    Patent number: 4784736
    Abstract: The preparation of a novel class of thin film membranes by interfacial polymerization is disclosed, said membanes incorporating as part of their polymeric structure the functionality of monomeric or oligomeric precursors. Specific embodiments include porphyrin and phthalocyanime derivatives that are photochemically or electrochemically active, as well as chemically asymmetric membranes.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: November 15, 1988
    Assignee: Bend Research, Inc.
    Inventors: Harold K. Lonsdale, Carl C. Wamser