Patents by Inventor Mitchel M. Shen

Mitchel M. Shen 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).

  • Polymerization or inorganic element-containing monomers using plasma, and the formed product
    Patent number: 4320219
    Abstract: An ionized gas plasma is established in an electrical field in contact with a non-vapor volume monomer (liquid and/or solid). The plasma causes polymerization of the monomers which are of the phosphazene or carborane type.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: March 16, 1982
    Assignee: The Regents of the University of California
    Inventors: Yoshihito Osada, Alexis T. Bell, Mitchel M. Shen
  • Polymerization of inorganic element-containing monomers using plasma
    Patent number: 4279723
    Abstract: An ionized gas plasma is established in an electrical field in contact with a non-vapor volume monomer (liquid and/or solid). The plasma causes polymerization of the monomers which are of the phosphazene or carborane type.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: July 21, 1981
    Assignee: The Regents of the University of California
    Inventors: Yoshihito Osada, Alexis T. Bell, Mitchel M. Shen
  • Method of plasma initiated polymerization
    Patent number: 4212719
    Abstract: An ionized gas plasma is established in an electrical field in contact with a non-vapor volume of monomer (liquid and/or solid). The plasma creates active polymerization sites in the monomer volume to initiate propagation of polymerization therein. After initiation, the partially-polymerized monomer volume is postpolymerized in the absence of the ionized gas plasma to yield a very high molecular weight polymer which may be essentially free of cross-linking in desirable forms including commercial quantities of bulk self-supporting polymer or a coating. Suitable monomers include liquid vinyl monomers (e.g., methyl, methacrylate) and solid crystalline monomers (e.g., 1,3,5-trioxane).
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: July 15, 1980
    Assignee: The Regents of the University of California
    Inventors: Yoshihito Osada, Alexis T. Bell, Mitchel M. Shen