Patents by Inventor Wilhelm Haarde

Wilhelm Haarde 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).

  • Preparation of methyl formate
    Patent number: 5401873
    Abstract: Preparation of methyl formate by the reaction of carbon monoxide and methanol under conditions of elevated pressure and temperature in the presence of an alkali metal methylate, in whichA) the starting materials are mixed in a mixing zone, are allowed to react partially, and the reaction solution is saturated with CO andB) the reaction is allowed to reach completion in one or more secondary reaction zones without the addition of further starting materials.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: March 28, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Zehner, Klaus Bittins, Wilhelm Haarde, Ulrich Eiden, Dietrich Wolff, Manfred Herr, Leopold Hupfer