Patents by Inventor Alan J. Abramson

Alan J. Abramson 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).

  • Alkylation of triphenylphosphate
    Patent number: 7074737
    Abstract: A process for the alkylation of triphenylphosphate by reaction of triphenylphosphate with an olefin in the presence of an effective amount of a solid acid catalyst selected from the group consisting of at least one zeolite, heteropolyacid or salt thereof, metal triflate, non-aryl group-containing metal sulfonic acid, metal halide Lewis acid, or compatible mixture of any such catalyst.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 11, 2006
    Assignee: Supresta U.S. LLC
    Inventors: Alan J. Abramson, Anantha Desikan, Shuguang Zhang, Zongchao Zhang, James Liang
  • High temperature, catalytic Friedel-Crafts synthesis of benzene phosphorus dichloride
    Patent number: 5698736
    Abstract: Benzene phosphorus dichloride can be prepared by the reaction of benzene and phosphorus trichloride in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, such as aluminum trichloride or ferric trichloride, at elevated temperature, such as from about 200.degree. C. to about 250.degree. C., and superatmospheric pressure, such as no less than the vapor pressure of the components at the chosen reaction temperature, to insure a liquid reaction medium.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: December 16, 1997
    Assignee: Akzo Nobel nv
    Inventors: Jeffrey E. Telschow, Alan J. Abramson
  • Alkyl vanadate color improvement
    Patent number: 4465637
    Abstract: The color of alkyl vanadate compounds that have become discolored is improved by treating the vanadates with an oxygen-containing gas, e.g., air, preferably at elevated temperature.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: August 14, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Alan J. Abramson, Gershon J. Davis
  • Process for the manufacture of alkyl vanadates
    Patent number: 4465636
    Abstract: The yield of alkyl vanadate formed by the reaction of vanadium pentoxide and an alkyl alcohol in the presence of an azeotroping agent and, preferably, a catalyst is improved by the present invention. It involves lowering, prior to the reaction, the amount of vanadium having a valence lower than +5 in the vanadium pentoxide reagent.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: August 14, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Alan J. Abramson, Gershon J. Davis