Patents by Inventor Quincy K. A. Sintim

Quincy K. A. Sintim 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).

  • Inhibition of pyrophoric iron sulfide activity
    Patent number: 6328943
    Abstract: Methods for inhibiting pyrophoric iron sulfide activity are disclosed. Methods are disclosed for inhibiting the sulfidation of iron oxides to iron sulfides and/or the oxidation of iron sulfide to inhibit pyrophoric activity. The methods comprise contacting iron oxides and/or iron sulfide with a liquid, solution, aerosol, or gaseous inhibitor comprising alkylamines, arylamines, imines; oxygen-containing compounds such as alcohols, aldehydes, esters, acids and ketones; mixed nitrogen-containing and oxygen-containing compounds such as alkanolamines, non-polymeric amides, hydroxylamines, Mannich products, polyisobutylenesuccinimides, oximes; sulfur-containing compounds and phosphorus-containing compounds.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 11, 2001
    Assignee: BetzDearborn Inc.
    Inventors: Paul V. Roling, Wiley L. Parker, Alan E. Goliaszewski, Timothy S. Williams, Bernard C. Groce, Quincy K. A. Sintim
  • Inhibition of pyrophoric iron sulfide activity
    Patent number: 6063347
    Abstract: Methods for inhibiting pyrophoric iron sulfide activity are disclosed. Methods are disclosed for inhibiting the oxidation of iron sulfide to inhibit pyrophoric activity. The methods comprise contacting iron oxides and/or iron sulfide with a liquid, solution, aerosol, or gaseous inhibitor comprising aromatic hydrocarbons such as alkyl substituted benzenes.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: May 16, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Paul V. Roling, Quincy K. A. Sintim
  • Inhibitors of color formation in alkanolamines
    Patent number: 5693866
    Abstract: In the thermal processing of crude alkanolamines, a method of inhibiting color formation in the alkanolamines comprising adding an amount, effective for the purpose, of an alkali metal hydroxide or sulfite, or mixtures thereof.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: December 2, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Paul V. Roling, Quincy K. A. Sintim, J. Frederick Martin
  • Methods for dispersing sulfur in aqueous systems
    Patent number: 5391781
    Abstract: Disclosed are methods for dispersing sulfur in aqueous systems comprising adding an alkylcarboxylic acid compound to the system. This prevents fouling of the aqueous system by the precipitated sulfur.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Quincy K. A. Sintim, Paul V. Roling