Patents by Inventor Walter M. Halper

Walter M. Halper 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).

  • Polymer concrete compositions
    Patent number: 4737538
    Abstract: The invention relates to a room temperature atmosphere pressure polymer concrete moldable composition comprising a thermosetting resin, vinyl monomer, catalyst, filler and a particular rubber component.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: April 12, 1988
    Assignee: Shell Oil Company
    Inventors: Walter M. Halper, Carl L. Willis
  • Molding compounds comprising a mixture of block copolymers employed as a modifier for thermosetting unsaturated polyester resin compositions
    Patent number: 4400478
    Abstract: The invention relates to molding compounds modified with a high 1,2 unsaturated carboxylated styrene-butadiene block polymer and a saturated styrene-alpha-olefin block polymer, said molding compounds containing an unsaturated crosslinkable resin, ethylenically unsaturated monomer, filler, reinforcing agent, catalyst, and thickener.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: August 23, 1983
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Walter M. Halper