Patents by Inventor Günther Lailach

Günther Lailach 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 preparing pure hydrofluoric acid
    Patent number: 6346227
    Abstract: The novel process for preparing pure hydrofluoric acid or pure hydrogen fluoride is characterized in that, after pretreatment by distillatioil/oxidation, a two-stage scrub is carried out using 65-90% strength by weight hydrofluoric acid and 90-100% strength by weight hydrofluoric acid and water is fed into the first or second scrubbing circuit and a corresponding amount of hydrofluoric acid is bled off to remove impurities.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: February 12, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventor: Günther Lailach