Patents by Inventor Mary J. Burkholder

Mary J. Burkholder 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).

  • Stable multiphase coating compositions
    Patent number: 4855164
    Abstract: A coating composition contains:(a) a waterborne film-forming polymer; and(b) a stable, liquid nonaqueous polymer microparticle dispersion characterized in that the nonaqueous dispersion, when independently spray applied, is capable of forming discrete, particle agglomerates upon volatilization of its nonaqueous medium, the components (a) and (b) being present in amounts effective to provide that the coating composition is a stable, multiphase composition.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: August 8, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Mary J. Burkholder, Barbara G. Piccirilli, Carl C. Anderson, Rodger G. Temple
  • Thermosetting high solids coating composition of hydroxy-functional epoxies and anhydrides
    Patent number: 4755582
    Abstract: Disclosed herein are high solids thermosetting coating compositions comprising hydroxy-functional polyepoxides and anhydrides as effective curing agents thereof. Films of these coating compositions are of remarkable appearance and are attended by remarkably low volatile organic content (VOC).
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: July 5, 1988
    Assignee: PPG Industries, Inc.
    Inventors: William P. Blackburn, Ronald R. Ambrose, Samuel Porter, Jr., Mary J. Burkholder
  • Color plus clear application of thermosetting high solids coating composition of epoxies, polyols and anhydrides
    Patent number: 4732791
    Abstract: Disclosed herein is an improved process of preparing color-plus-clear coatings, the improvement comprising high solids thermosetting coating compositions comprising polyepoxides and anhydrides as effective curing agents therefor. Films from these coating compositions are of remarkable appearance and are attended by remarkably low volatile organic content (VOC).
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: March 22, 1988
    Assignee: PPG Industries, Inc.
    Inventors: William P. Blackburn, Ronald R. Ambrose, Samuel Porter, Jr., Mary J. Burkholder