Patents by Inventor Marvin R. Appel

Marvin R. Appel 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).

  • Preparation of wires and cables
    Patent number: 8206825
    Abstract: A coated or jacketed wire or cable, and components thereof are disclosed. The coating, jacket, and components, which comprise a polyolefin and a phenolic polymeric antioxidant, exhibit outstanding oxidative thermal stability (as indicated by the increase in the oxidative inductive time (OIT)), when compared to polyolefins containing traditional non-polymeric antioxidants. A greater improvement in the thermal oxidative stability is observed after the polyolefin mixtures have been aged in water-blocking filler(s).
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: June 26, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Marvin R. Appel, Mick C. Hundley, Jeffrey S. Borke, Steven W. Horwatt
  • Removal of metal contaminants from polyethylene
    Patent number: 7638597
    Abstract: A process to remove metal contaminants from a hydrocarbon solution of polyethylene is disclosed. The process comprises adding a primary alcohol and a ?-diketone to a solution of polyethylene at a temperature within the range of 120° C. to 300° C. and contacting the solution with basic alumina. The process removes metal contaminants and minimizes degradation and condensation products, which can have a detrimental effect on polyethylene properties. The process provides polyethylene with low metal residues and good properties.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: December 29, 2009
    Assignee: Equistar Chemicals, LP
    Inventors: Bradley P. Etherton, Marvin R. Appel
  • Preparation of wires and cables
    Publication number: 20090176093
    Abstract: A coated or jacketed wire or cable, and components thereof are disclosed. The coating, jacket, and components, which comprise a polyolefin and a phenolic polymeric antioxidant, exhibit outstanding oxidative thermal stability (as indicated by the increase in the oxidative inductive time (OIT)), when compared to polyolefins containing traditional non-polymeric antioxidants. A greater improvement in the thermal oxidative stability is observed after the polyolefin mixtures have been aged in water-blocking filler(s).
    Type: Application
    Filed: January 3, 2008
    Publication date: July 9, 2009
    Inventors: Marvin R. Appel, Mick C. Hundley, Jeffrey S. Borke, Steven W. Horwatt
  • Removal of metal contaminants from polyethylene
    Publication number: 20090152169
    Abstract: A process to remove metal contaminants from a hydrocarbon solution of polyethylene is disclosed. The process comprises adding a primary alcohol and a ?-diketone to a solution of polyethylene at a temperature within the range of 120° C. to 300° C. and contacting the solution with basic alumina. The process removes metal contaminants and minimizes degradation and condensation products, which can have a detrimental effect on polyethylene properties. The process provides polyethylene with low metal residues and good properties.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 18, 2009
    Inventors: Bradley P. Etherton, Marvin R. Appel
  • Method and apparatus for measuring crystal formation
    Patent number: 4886354
    Abstract: Apparatus for measuring the formation of crystals in a flowing liquid using a flow way that receives a flow of the liquid therethrough; wherein, the flow way includes an optical means and access for illuminating the liquid with a beam of polarized light and then imaging the illuminated liquid to qualitatively ascertain the rate and type of crystal formation within the liquid.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: December 12, 1989
    Assignee: Conoco Inc.
    Inventors: Gary E. Welch, Marvin R. Appel, Jerry R. Bittle