Patents by Inventor Donald Allen McGriff

Donald Allen McGriff 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).

  • Clamp assembly
    Patent number: 11346474
    Abstract: The present embodiments relate to a novel clamping assembly. More specifically, present embodiments relate to a clamping assembly for blind flange installation which provides an air tight seal for piping applications including, but not limited to, low pressure high-density polyethylene (HDPE) piping applications.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: May 31, 2022
    Assignee: ISCO Industries, Inc.
    Inventors: Lee David Tharp, Donald Allen McGriff, Andrew Arod Rodgers
  • Clamp Assembly
    Publication number: 20200208764
    Abstract: The present embodiments relate to a novel clamping assembly. More specifically, present embodiments relate to a clamping assembly for blind flange installation which provides an air tight seal for piping applications including, but not limited to, low pressure high-density polyethylene (HDPE) piping applications.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 2, 2020
    Inventors: Lee David Tharp, Donald Allen McGriff, Andrew Arod Rodgers