Patents by Inventor Helmuth Grube

Helmuth Grube 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).

  • Manufacture of glycol acetate
    Patent number: 4189600
    Abstract: Diacetates of 1,2-glycols are manufactured by reacting acetic acid with an olefin and oxygen, using oxygen dissolved in the liquid phase of the reaction mixture and avoiding the presence of gaseous oxygen in the reaction space.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: February 19, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Martin Weitz, Juergen Hartig, Ludwig Vogel, Helmuth Grube