Patents by Inventor Brian Schwegler

Brian Schwegler 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).

  • Method for producing acetoacetic acid arylamides
    Patent number: 8030519
    Abstract: Acetoacetic acid arylamides are continuously produced from diketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: October 4, 2011
    Assignee: Lon za AG
    Inventors: Erich Armbruster, Thuy Quach, Günther Rosenthal, Brian Schwegler
  • Method for Producing Acetoacetic Acid Arylamides
    Publication number: 20090227811
    Abstract: Acetoacetic acid arylamides are produced from deketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.
    Type: Application
    Filed: April 12, 2006
    Publication date: September 10, 2009
    Inventors: Erich Armbruster, Thuy Quach, Gunther Rosenthal, Brian Schwegler
  • Preparation of trimethylolpropane
    Patent number: 7211701
    Abstract: The present invention relates to a process for preparing trimethylolpropane having a low APHA color number.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 1, 2007
    Assignee: Lanxess Deutschland GmbH
    Inventors: Dirk Müller, Paul Wagner, Brian Schwegler, Ulrich Notheis, Ralph Armbrust, Hans-Detlef Heinz, Alexander Wagner
  • Process for the preparation of tertiary alcohols by the hydration of tertiary olefins in a reactive rectification using a structured multi-purpose packing
    Patent number: 6951967
    Abstract: Tertiary alcohols can be prepared by the hydration of tertiary olefins having the same number of carbon atoms on an acidic ion exchanger using special structured multi-purpose packings for heterogeneous reactive rectification. An excellent yield and purity of the alcohol and an extended service life of the catalyst are achieved.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: October 4, 2005
    Assignees: EC Erdolchemie GmbH, Bayer AG
    Inventors: Axel Gohrt, Joachim Grub, Stefan Kaminsky, Stephan Muller, Brian Schwegler
  • Preparation of trimethylolpropane
    Publication number: 20030139631
    Abstract: The present invention relates to a process for preparing trimethylolpropane having a low APHA color number.
    Type: Application
    Filed: December 18, 2002
    Publication date: July 24, 2003
    Inventors: Dirk Muller, Paul Wagner, Brian Schwegler, Ulrich Notheis, Ralph Armbrust, Hans-Detlef Heinz, Alexander Wagner
  • Process for the preparation of tertiary alcohols by the hydration of tertiary olefins in a reactive rectification using a structured multi-purpose packing
    Publication number: 20030120123
    Abstract: Tertiary alcohols can be prepared by the hydration of tertiary olefins having the same number of carbon atoms on an acidic ion exchanger using special structured multi-purpose packings for heterogeneous reactive rectification. An excellent yield and purity of the alcohol and an extended service life of the catalyst are achieved.
    Type: Application
    Filed: February 13, 2003
    Publication date: June 26, 2003
    Applicant: BP Koln GmbH
    Inventors: Axel Gohrt, Joachim Grub, Stefan Kaminsky, Stephan Muller, Brian Schwegler
  • Process for the preparation of tertiary alcohols by the hydration of tertiary olefins in a reactive rectification using a structured multi-purpose packing
    Publication number: 20020072638
    Abstract: Tertiary alcohols can be prepared by the hydration of tertiary olefins having the same number of carbon atoms on an acidic ion exchanger using special structured multi-purpose packings for heterogeneous reactive rectification. An excellent yield and purity of the alcohol and an extended service life of the catalyst are achieved.
    Type: Application
    Filed: October 11, 2001
    Publication date: June 13, 2002
    Inventors: Axel Gohrt, Joachim Grub, Stefan Kaminsky, Stephan Muller, Brian Schwegler