Patents by Inventor Robert Wittenbrink

Robert Wittenbrink 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).

  • Plasticized polyolefin compositions
    Publication number: 20060189763
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: April 19, 2006
    Publication date: August 24, 2006
    Inventors: Henry Yang, Wen Li, Bruce Lundmark, Chon-Yie Lin, Chia Cheng, Bryan Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James Coffey, Sandra Schregenberger, David Lohse, Norman Yang, Jeffrey Zudock, Robert Wittenbrink
  • Process for improving basestock low temeperature performance using a combination catalyst system
    Publication number: 20060142142
    Abstract: Waxy feeds are converted to a basestock using a unitized mixed powdered pellet catalyst comprising a metal hydrogenation component on a support having a frist dewaxing component and a second isomerization component, wherein the first component is selected from 10 and 12 ring molecular sieves and mixtures thereof and the second component is an amorphous inorganic oxide. The first and second components are present in a ratio sufficient to promote wax isomerization and naphthene distractions without substantial decrease in VI.
    Type: Application
    Filed: November 12, 2002
    Publication date: June 29, 2006
    Applicant: ExxonMobile Research and Engineering Company
    Inventors: William Murphy, Ian Cody, Robert Wittenbrink, Stuart Soled, Gary McVicker, Sylvain Hantzer, Sandra Linek
  • High throughput property testing of olefin copolymers using rheological determinations
    Publication number: 20050244974
    Abstract: A high throughput method to determine an amount of a comonomer in a copolymer sample of a copolymer system comprises the steps of providing a plurality of copolymer samples; creating an array of the copolymer samples; measuring a sample complex modulus of each of the copolymer samples at a comparison phase angle; and determining the amount of a comonomer in the copolymer sample by comparing the sample complex modulus to a calibration curve, wherein the calibration curve relates a concentration of the comonomer in the copolymer sample to a complex moduli of the copolymer sample determined at the comparison phase angle. A method of determining the amount of a comonomer in both a single copolymer sample, and in a high throughput scheme using the crossover modulus is also disclosed.
    Type: Application
    Filed: April 13, 2004
    Publication date: November 3, 2005
    Inventors: Cesar Garcia-Franco, David Lohse, Bruce Harrington, Robert Wittenbrink