Patents by Inventor Gregory Norenberg

Gregory Norenberg 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).

  • Reactor apparatus
    Patent number: 7442345
    Abstract: A new reactor apparatus that can be used to carry out chemical reactions in a fluidized catalyst bed at high temperatures with reduced afterburning or other undesirable downstream side reactions.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: October 28, 2008
    Assignee: Ineos USA LLC
    Inventors: Louis R. Trott, David R. Wagner, Steven J. Rowe, Robert A. Gustaferro, Gregory A. Norenberg, Kenneth P. Keckler, Robert P. Hepfer
  • Two-stage process for the hydrogenation of maleic acid to 1,4-butanediol
    Patent number: 6989455
    Abstract: In the process for the conversion of maleic acid to gamma-butyrolactone, 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temperatures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of maleic acid in the feedstream and the first hydrogenation zone does not exceed about 130° C., thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: January 24, 2006
    Assignee: ISP Investments Inc.
    Inventors: Robert P. Hepfer, Craig T. Miller, Gregory A. Norenberg, Thomas G. Attig, John R. Budge
  • Reactor apparatus
    Publication number: 20050002837
    Abstract: A new reactor apparatus that can be used to carry out chemical reactions in a fluidized catalyst bed at high temperatures with reduced afterburning or other undesirable downstream side reactions.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 6, 2005
    Inventors: Louis Trott, David Wagner, Steven Rowe, Robert Gustaferro, Gregory Norenberg, Kenneth Keckler, Robert Hepfer
  • Two-stage process for the hydrogenation of maleic acid to 1,4-butanediol
    Publication number: 20040039213
    Abstract: In the process for the conversion of maleic acid to gamma-butyrolactone, 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temperatures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of maleic acid in the feedstream and the first hydrogenation zone does not exceed about 130° C., thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.
    Type: Application
    Filed: August 21, 2003
    Publication date: February 26, 2004
    Inventors: Robert P. Hepfer, Craig T. Miller, Gregory A. Norenberg, Thomas G. Attig, John R. Budge