Patents by Inventor W. John Delaney

W. John Delaney 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).

  • Method for determining the fouling tendency of crude petroleum oils
    Patent number: 4822475
    Abstract: This invention relates to a process for determining the fouling tendency of a crude petroleum oil feed, comprising the steps of:(a) mixing a selected volume of crude petroleum oil sample with a selected volume of a solvent medium,(b) agitating the resulting mixture to solubilize fouling-determining materials in the solvent medium,(c) removing a sample of the resulting solvent medium,(d) determining absorbance of the resulting solvent medium at 230-270 nm and subtracting from the absorbance that of control solvent medium to obtain corrected absorbance of the resulting solvent medium and(e) determining the fouling tendency of the crude petroleum oil sample by correlating the corrected absorbance of the resulting solvent medium with calibration data specific for the solvent medium used, the ratio of oil sample to polar solvent and the wavelength at which absorbance is determined.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: April 18, 1989
    Assignee: Betz Laboratories, Inc.
    Inventors: Cato R. McDaniel, W. John Delaney, Bruce E. Wright