Patents by Inventor Andrew M. Cochran

Andrew M. Cochran 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).

  • On-line measurement and control of polymer product properties by Raman spectroscopy
    Patent number: 7106437
    Abstract: Methods are provided for determining and controlling polymer product properties on-line in a slurry reactor system, such as a stirred slurry or slurry loop reactor. The methods include obtaining a regression model for determining a polymer product property, the regression model including principal component loadings and principal component scores, acquiring a Raman spectrum of polymer product in the slurry reactor system, calculating a new principal component score from at least a portion of the Raman spectrum and the principal component loadings, and calculating the polymer product property by applying the new principal component score to the regression model. The property can be controlled by adjusting at least one polymerization parameter based on the calculated polymer product property.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: September 12, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: David Geoffrey Marrow, Andrew M. Cochran, Scott Thomas Roger
  • On-line measurement and control of polymer product properties by Raman spectroscopy
    Publication number: 20040133364
    Abstract: Methods are provided for determining and controlling polymer product properties on-line in a slurry reactor system, such as a stirred slurry or slurry loop reactor. The methods include obtaining a regression model for determining a polymer product property, the regression model including principal component loadings and principal component scores, acquiring a Raman spectrum of polymer product in the slurry reactor system, calculating a new principal component score from at least a portion of the Raman spectrum and the principal component loadings, and calculating the polymer product property by applying the new principal component score to the regression model. The property can be controlled by adjusting at least one polymerization parameter based on the calculated polymer product property.
    Type: Application
    Filed: December 9, 2003
    Publication date: July 8, 2004
    Inventors: David Geoffrey Marrow, Andrew M. Cochran, Scott Thomas Roger