Patents by Inventor Robert B. Heiman

Robert B. Heiman 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).

  • Flexible cementitious coatings
    Patent number: 4392335
    Abstract: A repair overlay for masonry surfaces includes three layers each containing epoxy resins which contribute to bonding to the adjacent layers. The underlayer is a coating of epoxy adhesive. The layer that overlies the underlayer includes Portland cement and epoxy, acrylic and vinyl polymers and, in some forms, a flexible metal mesh or screen. The overlayer consists of an epoxy paint and, in preferred form, a second thinner layer of cementitious polymer bearing material.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: July 12, 1983
    Assignee: Astro-Steel Grip International, Inc.
    Inventor: Robert B. Heiman