Patents by Inventor Dennis George Peiffer

Dennis George Peiffer 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).

  • Patent number: 5841010
    Abstract: This invention is directed toward a method for inhibiting the formation (nucleation, growth and agglomeration) of clathrate hydrates. The method comprises adding into a mixture comprising hydrate forming substituents and water, an effective amount of a hydrate inhibitor selected from the group consisting of anionic, cationic, non-ionic and zwitterionic hydrate inhibitors. The hydrate inhibitor has a polar head group and a nonpolar tail group not exceeding 12 carbon atoms in the longest carbon chain.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 24, 1998
    Assignee: Exxon Production Research Company
    Inventors: Manese Rabeony, Dennis George Peiffer, Christine Ann Costello, Pamela Jean Wright, Karla Schall Colle, Larry Dalton Talley
  • Patent number: 5807629
    Abstract: An elastomeric material nanocomposite having sufficiently low air permeability to be useful as a tire inner liner among other things, can be prepared by dispersing a layered clay material into the elastomer in the form of packets having an average thickness in the range of about 100 .ANG. to about 1400 .ANG.. Accordingly, the present invention provides in one embodiment, a novel composite composition, and in another embodiment, a novel tire inner liner composition.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: September 15, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Chester W. Elspass, Dennis George Peiffer, Edward Nathan Kresge, Pamela Jean Wright, James Joseph Chludzinski, Hsien Chang Wang
  • Patent number: 5677381
    Abstract: In one embodiment of the present invention, there is provided a composition comprising a major amount of an ethylene alpha olefin copolymer and a minor amount of a lower molecular weight ethylene alpha olefin or a neutralized sulfonated ethylene alpha olefin.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: October 14, 1997
    Assignee: Exxon Research and Engineering Company
    Inventors: Dennis George Peiffer, James Joseph Chludzinski, Ching-Tai Lue, Thomas Craig Erderly
  • Patent number: 5652284
    Abstract: A composite material is provided comprising an elastomer, from about 0.1 wt % to about 15 wt. % of a layered mineral based on the weight of the total composition and from about 0.1 wt. % to about 15 wt. % of asphalt based on the weight of the total composition.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: July 29, 1997
    Assignee: Exxon Research & Engineering Company
    Inventors: Clarence Martin Eidt, Jr., Martin Leo Gorbaty, Chester W. Elspass, Dennis George Peiffer
  • Patent number: H1749
    Abstract: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The method uses a mixture comprising a first additive and a second additive. The mixture produces a synergistic hydrate inhibition effect. The first additive is selected from the class of substantially water soluble polymers. The second additive is selected from the class of ionic or non-ionic organic compounds which have a polar part and nonpolar part with the nonpolar part having an alkyl, alkenyl, or alkynyl group with 12 or fewer carbon atoms.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: September 1, 1998
    Assignee: Exxon Production Research Company
    Inventors: Karla Schall Colle, Christine Ann Costello, Russell Harlan Oelfke, Dennis George Peiffer, Manese Rabeony, Larry D. Talley, Pamela Jean Wright