Patents by Inventor William Howard Sachs

William Howard Sachs 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).

  • Start-up procedure for multiple catalyst polymerization systems
    Patent number: 6620894
    Abstract: This invention relates to a method to start up an olefin polymerization process comprising: a. calculating a trajectory, from elements including catalyst deactivation rate constants (kd), for the rate of introduction of a catalyst system, into a reactor, said catalyst system comprising two different metal catalyst compounds (A and B) and at least one activator, wherein the ratio of the deactivation constants of the two different metal catalyst compounds kdA/kdB is not 1; and b. introducing olefin monomer, a catalyst system, optional co-monomer, and optional chain transfer or termination agents into a polymerization reactor in a manner such that the catalyst system introduction rate is manipulated to follow the trajectory until a desired production rate is achieved.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: September 16, 2003
    Assignee: Univation Technologies, LLC
    Inventor: William Howard Sachs
  • Start-up procedure for multiple catalyst polymerization systems
    Publication number: 20020132937
    Abstract: This invention relates to a method to start up an olefin polymerization process comprising:
    Type: Application
    Filed: December 6, 2001
    Publication date: September 19, 2002
    Inventor: William Howard Sachs