Patents by Inventor Eric Bickerstaff

Eric Bickerstaff 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).

  • Method of sealing bridge deck joints
    Patent number: 4324504
    Abstract: A method of sealing bridge deck joints on a highway in which the deck members have the road surfacing material removed therefrom and a flexible composition of chips of aggregate in a rubberized binder, such as bitumen, pitch, pitch-tar or tar is inserted in the removed area as a resilient sealing material.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: April 13, 1982
    Assignee: Thormack Sealants Limited
    Inventors: Richard L. Cottingham, David J. Thorpe, Eric Bickerstaff