Patents by Inventor Gerald M. Boyle

Gerald M. Boyle 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).

  • Rate of crystallizing diphenylisophthalate/diphenylterephthalate monomer
    Patent number: 4720570
    Abstract: A process for improving the rate of crystallization of a diphenylisophthalate/diphenylterephthalate monomer. The process comprises dissolving the monomer in an organic solvent, filtering the solution to remove impurities, and crystallizing the monomer to remove impurities. The precipitated monomer is then separated from the solvent by a centrifuge and dried. The monomer has a desired crystal size of about 2 mm. The process also is more efficient in that it reduces scaling inside the reactor system.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: January 19, 1988
    Assignee: Celanese Corporation
    Inventor: Gerald M. Boyle