Patents by Inventor Andrej Stravs

Andrej Stravs 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 production of gamma-butyrobetaine
    Patent number: 5087745
    Abstract: Process, which is feasible on a commercial scale, for the production of gamma-butyrobetaine. For this purpose, butyrolactone with hydrogen chloride and an alcohol is converted to the chlorobutyric acid ester, the trimethylammonium butyric acid salt is formed with trimethylamine and then saponified to the end product.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: February 11, 1992
    Assignee: Lonza Ltd.
    Inventors: Peter Hardt, Andrej Stravs, Pius Abgottspon