Patents by Inventor Michael G. Ormand

Michael G. Ormand 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).

  • Method of making polycarbonate prepolymer and method of making high molecular weight polycarbonate
    Patent number: 5864006
    Abstract: Polycarbonate prepolymer is crystallized using a water and solvent mixture, or by application of a shear force while heating, or by orientation of the prepolymer with a shear force followed by a temperature hold. High molecular weight polycarbonate is obtained by the solid state reaction of the crystallized prepolymer.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: January 26, 1999
    Assignee: The Dow Chemical Company
    Inventors: Michael G. Ormand, Sarat Munjal