Patents by Inventor Richard M. Hubbard

Richard M. Hubbard 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).

  • Roof drain arrangement and method
    Patent number: 5724777
    Abstract: A roof drain arrangement and method for sealing a space between an existing drain opening, the roof drain arrangement, and a new roof membrane, is disclosed. The arrangement and method provide for sealing of an area between the roof drain arrangement and the roof structure. Sealing is provided by adhesive material disposed on a lower surface of an upper flange portion of the insert portion, or by adhesive disposed on an upper surface of a base plate, or by a roofing membrane located between the lower surface of the upper flange portion and the base plate, or by a combination thereof.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: March 10, 1998
    Inventor: Richard M. Hubbard