Patents by Inventor Robert E. Beckwith, Jr.

Robert E. Beckwith, Jr. 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).

  • Sulfur stabilized oxidized polyolefin composition
    Patent number: 4537922
    Abstract: The present invention is a sulfur stabilized composition. The composition comprises an oxidized polyolefin, preferably oxidized polyethylene or oxidized polypropylene, with oxidized polyethylene being most preferred. The composition of the present invention optionally contains a filler.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: August 27, 1985
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.
  • Sulfur stabilized oxidized polyolefin and asphalt composition
    Patent number: 4497921
    Abstract: The present invention is a sulfur stabilized composition. The composition comprises an oxidized polyolefin, preferably oxidized polyethylene or oxidized polypropylene, with oxidized polyethylene being most preferred. The composition of the present invention can comprise oxidized polyolefin, asphalt, preferably oxidized, and optionally a filler.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: February 5, 1985
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.
  • Article coated with a sulfur stabilized oxidized polyolefin and asphalt composition
    Patent number: 4496622
    Abstract: The present invention is a sulfur stabilized composition. The composition comprises an oxidized polyolefin, preferably oxidized polyethylene or oxidized polypropylene, with oxidized polyethylene being most preferred. The composition of the present invention can comprise oxidized polyolefin, asphalt, preferably oxidized, and optionally a filler.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: January 29, 1985
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.
  • Roofing asphalt formulation
    Patent number: 4382989
    Abstract: The present invention is an asphaltic composition which is useful as a roofing asphalt formulation and method of making this formulation. The composition includes about 39 to 99 percent by weight of oxidized asphalt and between 1 and about 8 percent of oxidized polyethylene. It is preferred to use between about 0 to 40 percent of the saturant, which can be an unoxidized asphalt, to modify the viscosity of the formulation. There can be a filled asphaltic composition comprising about 40 percent by weight to about 99 percent by weight of the asphaltic composition and about 1 percent by weight to about 60 percent by weight of filler, which can be stone dust.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: May 10, 1983
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.
  • Roofing asphalt formulation
    Patent number: 4328147
    Abstract: The present invention is an asphaltic composition which is useful as a roofing asphalt formulation and method of making this formulation. The composition includes about 39 to 99 percent by weight of oxidized asphalt and between 1 and about 8 percent oxidized polyethylene. It is preferred to use between about 0 to 40 percent of the saturant, which can be an unoxidized asphalt, to modify the viscosity of the formulation. There can be a filled asphaltic composition comprising about 40 percent by weight to about 99 percent by weight of the asphaltic composition and about 1 percent by weight to about 60 percent by weight of filler, which can be stone dust.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: May 4, 1982
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.