Patents by Inventor Shari I. Kram

Shari I. Kram 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).

  • Process for brominating butadiene/vinyl aromatic copolymers
    Patent number: 8304492
    Abstract: A polybutadiene brominating method uses a quaternary ammonium tribromide as the brominating agent. The brominating is performed in solution, and dual extractions recover the spent brominating agent and recombine it with fresh bromine to regenerate an active tribromide. Solvent and aqueous extraction streams can be purified and recycled as needed.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: November 6, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Douglas C. Greminger, Ronald B. Leng, William G. Stobby, Shari I. Kram
  • PROCESS FOR BROMINATING BUTADIENE/VINYL AROMATIC COPOLYMERS
    Publication number: 20110060104
    Abstract: A polybutadiene brominating method uses a quaternary ammonium tribromide as the brominating agent. The brominating is performed in solution, and dual extractions recover the spent brominating agent and recombine it with fresh bromine to regenerate an active tribromide. Solvent and aqueous extraction streams can be purified and recycled as needed.
    Type: Application
    Filed: April 3, 2009
    Publication date: March 10, 2011
    Inventors: Douglas C. Greminger, Ronald B. Leng, William G. Stobby, Shari I. Kram