Patents by Inventor Helmut Vollmueller

Helmut Vollmueller 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 the preparation of 2H-heptafluoropropane
    Patent number: 5912392
    Abstract: Process for the preparation of 2H-heptafluoropropane from hexafluoropropene and hydrogen fluoride in an apparatus equipped with bubble columns fitted with flow resistances, in which a liquid hydrofluoride of an organic base circulates.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: June 15, 1999
    Assignee: Solvay (Societe Anonyme)
    Inventors: Helmut Vollmueller, Raimund Franz, Guenter Siegemund