Patents by Inventor Robert L. Ehrenfeld

Robert L. Ehrenfeld 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).

  • Hydrothermal hydrolysis of halogenated compounds
    Patent number: 6956140
    Abstract: A process for preparing a halogenated alcohol comprising hydrolyzing a halogenated precursor of the halogenated alcohol in water at a temperature near but below the critical point of water. For example, the halogenated alcohol has the formula CF3(CF2)nCH2OH, wherein n is zero or a whole number from 1 to 5, the halogenated precursor has the formula CF3(CF2)nCH2Cl, wherein n is as defined above, and the process comprises hydrolyzing the halogenated precursor in water at a temperature near but below the critical point of water. In a particularly preferred embodiment, the halogenated alcohol has the formula CF3CH2OH, the halogenated precursor has the formula CF3CH2Cl, and the process comprises hydrolyzing CF3CH2Cl in water at a temperature near but below the critical point of water.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 18, 2005
    Assignee: Halocarbon Products Corporation
    Inventor: Robert L. Ehrenfeld
  • Hydrothermal hydrolysis of halogenated compounds
    Publication number: 20040110993
    Abstract: A process for preparing a halogenated alcohol comprising hydrolyzing a halogenated precursor of the halogenated alcohol in water at a temperature near but below the critical point of water. For example, the halogenated alcohol has the formula CF3(CF2)nCH2OH, wherein n is zero or a whole number from 1 to 5, the halogenated precursor has the formula CF3(CF2)nCH2Cl, wherein n is as defined above, and the process comprises hydrolyzing the halogenated precursor in water at a temperature near but below the critical point of water. In a particularly preferred embodiment, the halogenated alcohol has the formula CF3CH2OH, the halogenated precursor has the formula CF3CH2Cl, and the process comprises hydrolyzing CF3CH2Cl in water at a temperature near but below the critical point of water.
    Type: Application
    Filed: January 31, 2003
    Publication date: June 10, 2004
    Inventor: Robert L Ehrenfeld