Patents by Inventor Jim C. Sun

Jim C. Sun 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).

  • Method to prepare high strength ultrahigh molecular weight polyolefin articles by dissolving particles and shaping the solution
    Patent number: 5032338
    Abstract: A method to prepare high strength high modulus polyolefin shaped articles comprising forming a heated solution of the polyolefin from particles of which about 75 to 100% by weight have a particle size of from about 100 to about 400 microns and having a weight average molecular weight of from about 300,000 to 7,000,000, then shaping the heated soltion then cooling the shaped solution. To further increase the strength of the article it can be stretched.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: July 16, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Gene C. Weedon, Thomas Y. Tam, Jim C. Sun
  • Method to extract material from a running length of fiber
    Patent number: 4978492
    Abstract: A method of extracting a material from a continuous running length of fiber comprising continuously moving the fiber through a conduit while simultaneously flowing a solvent for the material through the conduit with the conduit having a length and cross sectional area sufficient to facilitate extraction of the desired amount of the material. The flow is countercurrent to the movement of the fiber.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: December 18, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Jim C. Sun, Mark B. Boone, James J. Dunbar, Gene C. Weedon
  • Apparatus and method to extract material from a running length of fiber
    Patent number: 4771616
    Abstract: This invention is an apparatus and method of extracting a material from a continuous running length of fiber comprising continuously moving the fiber through a conduit while simultaneously flowing a solvent for the material through the conduit with the conduit having a length and cross sectional area sufficient to facilitate extraction of the desired amount of the material. The flow is preferred to be countercurrent to the movement of the fiber.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: September 20, 1988
    Assignee: Allied Corporation
    Inventors: Jim C. Sun, Mark B. Boone, James J. Dunbar, Gene C. Weedon