Patents by Inventor Michael C-C Chen

Michael C-C Chen 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).

  • Polypropylene films
    Patent number: 7098277
    Abstract: The present invention provides isotactic polypropylene compositions suitable for cast film applications, cast polypropylene films made therefrom, and processes for forming such films. The novel polypropylene films are formed from film resins having a melt flow ratio of from 6–15 dg/min, with a narrow molecular weight distribution, narrow composition distribution, low level of solvent extractables, and increased film clarity (i.e., decreased haze %) compared to prior art Ziegler-Natta polypropylene film resins. The polypropylene films can be cast from an extruded polypropylene polymer, the extruded isotactic polypropylene polymer being formed by polymerization with a fluorided silica supported catalyst.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: August 29, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chon-Yie Lin, Michael C-C Chen, Aspy K. Mehta
  • Polypropylene films
    Publication number: 20040030050
    Abstract: The present invention provides isotactic polypropylene compositions suitable for cast film applications, cast polypropylene films made therefrom, and processes for forming such films. The novel polypropylene films are formed from film resins having a melt flow ratio of from 6-15 dg/min, with a narrow molecular weight distribution, narrow composition distribution, low level of solvent extractables, and increased film clarity (i.e., decreased haze %) compared to prior art Ziegler-Natta polypropylene film resins. The polypropylene films can be cast from an extruded polypropylene polymer, the extruded isotactic polypropylene polymer being formed by polymerization with a fluorided silica supported catalyst.
    Type: Application
    Filed: June 9, 2003
    Publication date: February 12, 2004
    Inventors: Chon-Yie Lin, Michael C-C Chen, Aspy K. Mehta