Patents by Inventor Franz Ramgraber

Franz Ramgraber 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 and device for hydrolytically obtaining a carboxylic acid and alcohol from the corresponding carboxylic ester
    Patent number: 7288675
    Abstract: A process and apparatus for hydrolytic cleavage of carboxylic esters and water into carboxylic acid and alcohol hydrolysis products. In the process, a portion of water required for hydrolysis is replaced by a recycled mixture of carboxylic acid and water from previously hydrolyzed carboxylic ester.
    Type: Grant
    Filed: November 27, 2003
    Date of Patent: October 30, 2007
    Assignee: Wacker Chemie AG
    Inventors: Harald Michl, Franz Ramgraber
  • Method and device for hydrolytically obtaining a carboxylic acid and alcohol from the corresponding carboxylic ester
    Publication number: 20060128991
    Abstract: A process and apparatus for hydrolytic cleavage of carboxylic esters and water into carboxylic acid and alcohol hydrolysis products. In the process, a portion of water required for hydrolysis is replaced by a recycled mixture of carboxylic acid and water from previously hydrolyzed carboxylic ester.
    Type: Application
    Filed: November 27, 2003
    Publication date: June 15, 2006
    Inventors: Harald Michl, Franz Ramgraber
  • Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate
    Patent number: 7041199
    Abstract: A process and a device for the catalytic hydrolysis of a carboxylate, e.g., methyl acetate, ethyl acetate, i- or n-propyl acetate, i- or n-butyl acetate, allyl acetate and methyl formate, into the corresponding carboxylic acid and alcohol, by a combination of a pre-reactor and a reactive distillation column are disclosed. By the combination of a pre-reactor and a reactor distillation column, the conversion ratio can be substantially improved. The device can compensate for fluctuations in the supply quantity or in the composition of the feed flow. The product composition can also be controlled in a wide range.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: May 9, 2006
    Assignees: Sulzer Chemtech AG, Wacker Chemie GmbH
    Inventors: Peter Moritz, Franz Ramgraber, Claudia von Scala, Harald Michl