Patents by Inventor Ronald Drews

Ronald Drews 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 continuously preparing N-ethyl-2-pyrrolidone (NEP)
    Patent number: 7994350
    Abstract: Process for the continuous preparation of N-ethyl-2-pyrrolidone (NEP) by reacting gamma-butyrolactone (GBL) with monoethylamine (MEA) in the liquid phase, wherein GBL and MEA are used in a molar ratio in the range from 1:1.08 to 1:2 an the reaction is carried out at a temperature in the range from 320 to 420° C. and an absolute pressure in the range from 70 to 120 bar.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 9, 2011
    Assignee: BASF SE
    Inventors: Helmut Schmidtke, Ralph Versch, Silke Simon, Karl Ott, Ronald Drews, Stephanie Mollner
  • PROCESS FOR CONTINUOUSLY PREPARING N-ETHYL-2-PYRROLIDONE (NEP)
    Publication number: 20090187030
    Abstract: Process for the continuous preparation of N-ethyl-2-pyrrolidone (NEP) by reacting gamma-butyrolactone (GBL) with monoethylamine (MEA) in the liquid phase, wherein GBL and MEA are used in a molar ratio in the range from 1:1.08 to 1:2 an the reaction is carried out at a temperature in the range from 320 to 420° C. and an absolute pressure in the range from 70 to 120 bar.
    Type: Application
    Filed: May 10, 2007
    Publication date: July 23, 2009
    Applicant: BASF SE
    Inventors: Helmut Schmidtke, Ralph Versch, Silke Simon, Karl Ott, Ronald Drews, Stephanie Mollner
  • High capacity purification of thermally unstable compounds
    Patent number: 7326323
    Abstract: Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section and a stripping section with the stripping section having a stripping tray with 5 to 50% open area, a pressure drop from 0.02 psi to 0.2 psi and a tray efficiency during operation of the column which is equal to or greater than 20%.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: February 5, 2008
    Assignee: Rohm and Haas Company
    Inventors: Robert Michael Mason, Jeffery Alan Goodwin, Ronald Drew Myers, Michael Stanley DeCourcy
  • Method for the production of propargyl alcohol
    Patent number: 7282614
    Abstract: The present invention provides a process for preparing propargyl alcohol by converting an aqueous formaldehyde solution comprising acetylene over a catalyst comprising copper acetylide at an operating pressure of from 1 to 15 bar and from 70 to 120° C. without forming a continuous gas phase, in which the aqueous formaldehyde solution comprises an organic solvent for acetylene and the catalyst is arranged in a fluidized bed.
    Type: Grant
    Filed: July 3, 2004
    Date of Patent: October 16, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Maximilian Vicari, Martin Rudloff, Andreas Kramer, Ronald Drews
  • Method for the production of propargyl alcohol
    Publication number: 20070112226
    Abstract: The present invention provides a process for preparing propargyl alcohol by converting an aqueous formaldehyde solution comprising acetylene over a catalyst comprising copper acetylide at an operating pressure of from 1 to 15 bar and from 70 to 120° C. without forming a continuous gas phase, in which the aqueous formaldehyde solution comprises an organic solvent for acetylene and the catalyst is arranged in a fluidized bed.
    Type: Application
    Filed: July 3, 2004
    Publication date: May 17, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Maximillian Vicari, Martin Rudloff, Andreas Kramer, Ronald Drews
  • High capacity purification of thermally unstable compounds
    Publication number: 20040104108
    Abstract: Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section and a stripping section with the stripping section having a stripping tray with 5 to 50% open area, a pressure drop from 0.02 psi to 0.2 psi and a tray efficiency during operation of the column which is equal to or greater than 20%.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 3, 2004
    Inventors: Robert Michael Mason, Jeffrey Alan Goodwin, Ronald Drew Myers, Michael Stanley DeCourcy
  • Catalyst containing metal oxides for use in the degenerative oxidation of organic compounds present in exhaust gases from combustion plants
    Patent number: 5227356
    Abstract: A metal oxide-containing catalyst which also contains, besides oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten, and/or chromium, sulfates of alkaline earth metals, and which is used in a process for the degenerative oxidation of organic compounds present in exhaust gases from combustion plants.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: July 13, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hess, Bernd Morsbach, Ronald Drews, Wolfgang Buechele, Helmut Schachner