Patents by Inventor Michael A. Capraro

Michael A. Capraro 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).

  • Filtration process for purifying polyols
    Patent number: 4137396
    Abstract: An improvement in the process for the removal of residual catalyst from polyether polyols is achieved by the use of a solvent wash and recovery system.
    Type: Grant
    Filed: August 31, 1977
    Date of Patent: January 30, 1979
    Assignee: BASF Wyandotte Corporation
    Inventors: Joseph F. Louvar, Michael A. Capraro, William M. Herring