Patents by Inventor Otto Grabowsky

Otto Grabowsky 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 formaldehyde
    Patent number: 4209466
    Abstract: Manufacture of formaldehyde by oxidative dehydrogenation of methanol in the presence of a silver catalyst using methanol obtained from a condensate derived from the evaporation of aqueous reaction mixtures in the synthesis of urea resins and then treated with caustic soda solution under specific conditions of temperature, pressure, residence time and initial formaldehyde concentration. The formaldehyde obtained is a disinfectant, tanning agent, reducing agent and starting material for the manufacture of synthetic resins, adhesives and plastics.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: June 24, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Wolf, Hans Diem, Otto Grabowsky, Guenther Matthias
  • Method of cold adhesion of wood glues to wood particles
    Patent number: 3990928
    Abstract: Improvement of the cold adhesion of glue resins, particularly phenoplast and aminoplast wood glues, by the addition of small amounts of a ligninsulfonate.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: November 9, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Christof Schmidt-Hellerau, Otto Grabowsky
  • 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