Patents by Inventor Anthony L. Bull

Anthony L. Bull 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).

  • Bituminous composition
    Patent number: 4904713
    Abstract: Bituminous composition comprising a bitumen, an elastomeric, optionally hydrogenated, block copolymer containing at least two alkenyl arene blocks A and at least one conjugated diene block B, and a polymer of a monoalkenyl arene of which polymer the number average molecular weight is the range of 0.25 to 2 times the number average molecular weight of the polymeric blocks A.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: February 27, 1990
    Assignee: Shell Oil Company
    Inventors: Willem C. Vonk, Hendrik J. Brouwer, Anthony L. Bull