Patents by Inventor Maris Jazeps Ziemelis

Maris Jazeps Ziemelis 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).

  • Radiation curable siloxane compositions containing vinyl ether functionality and methods for their preparation
    Patent number: 5861467
    Abstract: The present invention relates to radiation curable silicone vinyl ethers and methods for preparing silicone vinyl ethers. More particularly, the present invention relates compositions containing vinyl ether functional silicones and to the preparation and use of silicone vinyl ethers which are curable by addition of photocleavable acids and exposure to ultraviolet or electron beam radiation.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: January 19, 1999
    Assignee: Dow Corning Corporation
    Inventors: Valerie Joy Bujanowski, Shedric Oneal Glover, Susan Victoria Perz, Maris Jazeps Ziemelis, Gary Rex Homan, Michael Ward Skinner
  • Method of making hydrophobic copolymers hydrophilic
    Patent number: 5856409
    Abstract: A method for altering a macroporous cross-linked hydrophobic copolymeric lattice produced by precipitation polymerization in a solvent of at least one monounsaturated ester monomer and at least one polyunsaturated ester monomer soluble therein, in order to render the hydrophobic copolymeric lattice hydrophilic. The method involves saponifying the hydrophobic copolymeric lattice by reacting the surface of the hydrophobic copolymeric lattice with an aqueous alkali. The surface can also be rendered hydrophilic by polymerizing an acrylate monomer onto the lattice in order to form a surface containing carboxylic acid sites. The carboxylic acid sites formed on the surface of the lattice are converted to carboxylate anions.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: January 5, 1999
    Assignee: Dow Corning Corporation
    Inventors: Maris Jazeps Ziemelis, William Robb Roy Park
  • Radiation curable compositions containing vinyl ether functionality and methods for their preparation
    Patent number: 5824761
    Abstract: The present invention relates to radiation curable silicone vinyl ethers and methods for preparing silicone vinyl ethers. More particularly, the present invention relates compositions containing vinyl ether functional silicones and to the preparation and use of silicone vinyl ethers which are curable by addition of photocleavable acids and exposure to ultraviolet or electron beam radiation.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: October 20, 1998
    Assignee: Dow Corning Corporation
    Inventors: Valerie Joy Bujanowski, Shedric Oneal Glover, Susan Victoria Perz, Maris Jazeps Ziemelis, Gary Rex Homan, Michael Ward Skinner