Patents by Inventor Anne M. Karachewski

Anne M. Karachewski 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).

  • Process for preparing aromatic carboxylic acids with efficient treatments of gaseous effluent
    Patent number: 6137001
    Abstract: Processes are disclosed for recovery of hydrogen bromide from one or more alkyl bromide compounds by hydrolyzing the alkyl bromide compounds to hydrogen bromide and corresponding alcohols, and simultaneously separating at least the alcoholic products of hydrolysis from aliphatic monocarboxylic acid solvent component. Also disclosed are process for preparing aromatic carboxylic acids by the exothermic, liquid-phase oxidation of an aromatic feedstock compound wherein the energy produced by the exothermic oxidation is efficiently recovered, and uses of water produced during the preparation of aromatic carboxylic acids are efficiently integrated into the process.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: October 24, 2000
    Assignee: BP Amoco Corporation
    Inventors: Jeffrey L. Broeker, Frank G. Belmonte, Thomas M. Bartos, Alakananda Bhattacharyya, Anne M. Karachewski, Bruce I. Rosen, Kenneth J. Abrams
  • Alkylation of alkylaromatics promoted by amine compound
    Patent number: 5334796
    Abstract: An improved process for alkylating an alkylaromatic having at least one benzylic hydrogen atom with an olefinic compound comprising contacting the alkylaromatic under liquid phase conditions with an olefinic compound in the presence of at least one alkali metal activated by amine compound.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: August 2, 1994
    Assignee: Amoco Corporation
    Inventors: Lawrence D. Lillwitz, Anne M. Karachewski
  • Alkylation of alkylaromatics promoted by sonicated alkali metal
    Patent number: 5198594
    Abstract: An improved process for alkylating an alkylaromatic having at least one benzylic hydrogen atom with an olefinic compound comprising contacting the alkylaromatic under liquid phase conditions with an olefinic compound in the presence of at least one alkali metal activated by sonication.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 30, 1993
    Assignee: Amoco Corporation
    Inventors: Lawrence D. Lillwitz, Anne M. Karachewski