Patents by Inventor Gunther Hellmann

Gunther Hellmann 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).

  • Transport of ethyne in form of ?-alkynols as ethyne precursors
    Patent number: 8003843
    Abstract: The present invention relates to a new method for a safe transport of ethyne in form of ?-alkynols as precursors for ethyne. The new method comprises three steps. In a first step the synthesis of the ?-alkynol(s) is performed by reacting ethyne with (a) carbonyl compound(s). The second step comprises the transport of the resulting ?-alkynol(s) in a safe manner, whereas the safety requirements for this transport are not as high as for ethyne because ?-alkynol(s) are normally classified for transportation as hazardous class 3. In the third step the ?-alkynol(s) can be cleaved and the ethyne and the carbonyl compound(s) can be obtained in the cleavage reaction and can be separated to yield pure products for further applications.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: August 23, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Angela Wildermann, Werner Bonrath, Gunther Hellmann
  • TRANSPORT OF ETHYNE IN FORM OF A-ALKYNOLS AS ETHYNE PRECURSORS
    Publication number: 20090221860
    Abstract: The present invention relates to a new method for a safe transport of ethyne in form of ?-alkynols as precursors for ethyne. The new method comprises three steps. In a first step the synthesis of the ?-alkynol(s) is performed by reacting ethyne with (a) carbonyl compound(s). The second step comprises the transport of the resulting ?-alkynol(s) in a safe manner, whereas the safety requirements for this transport are not as high as for ethyne because ?-alkynol(s) are normally classified for transportation as hazardous class 3. In the third step the ?-alkynol(s) can be cleaved and the ethyne and the carbonyl compound(s) can be obtained in the cleavage reaction and can be separated to yield pure products for further applications.
    Type: Application
    Filed: March 30, 2007
    Publication date: September 3, 2009
    Inventors: Angela Wildermann, Werner Bonrath, Gunther Hellmann