Patents by Inventor Guenther Schoenaich

Guenther Schoenaich 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 granular isobutylidenediurea
    Patent number: 3962329
    Abstract: The preparation of isobutylidenediurea from isobutyraldehyde and urea, the particle size of the product being controlled by alternate use of sulfuric acid and phosphoric acid.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: June 8, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenther Schoenaich, Otto Grabowsky, Johann Mayer, Guenther Matthias