Patents by Inventor Charles L. Ryan, Jr.

Charles L. Ryan, Jr. 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).

  • Microwave processing of carbonate monomers
    Patent number: 5237032
    Abstract: Carbonate monomers are polymerized in the presence or absence of a polymerization initiator by irradiation with electromagnetic radiation in the absence of solvent or diluent.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: August 17, 1993
    Assignees: Istituto Guido Donegani S.p.A., Enichem S.p.A.
    Inventors: Mark T. DeMeuse, Charles L. Ryan, Jr., Fabrizio Parodi
  • Method of extrusion blow-molding polyphenylene sulfide articles
    Patent number: 5089209
    Abstract: Articles are blow-molded from a polyphenylene sulfide resin having a melt flow in a range of from about 1 to about 10 g/10 min., and preferably in a range of from about 4 to about 8 g/10 min. When filler materials such as mica are added, the upper end of the acceptable melt flow range is raised to about 15 g/10 min. By maintaining mold temperatures in a range of from about 250.degree. to about 400.degree. F., and preferably from about 275.degree. to about 325.degree. F., the polyphenylene sulfide material in the blow-molded article is provided with a semi-crystalline structure, and is dimensionally stable at temperatures of at least 500.degree. F. Filler materials are preferably provided in a range of from about 10 to about 20 weight percent.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: February 18, 1992
    Assignee: Phillips Petroleum Company
    Inventors: Fay W. Bailey, Charles L. Ryan, Jr.