Patents by Inventor Zhiqiang Jimmy Zhou

Zhiqiang Jimmy Zhou 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).

  • Polymer compositions and method of making pipes
    Patent number: 7989549
    Abstract: A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (“LTD”) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolyethylene or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same or different composition (i.e., with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: August 2, 2011
    Assignee: Union Carbide Chemicals & Plastics Technology LLC
    Inventors: Zhiqiang Jimmy Zhou, William J. Michie, Jr.
  • Polymer compositions and method of making pipes
    Publication number: 20040034169
    Abstract: A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (“LTD”) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolyethylene or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same or different composition (i.e., with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described.
    Type: Application
    Filed: June 4, 2003
    Publication date: February 19, 2004
    Applicant: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Zhiqiang Jimmy Zhou, William J. Michie