Patents by Inventor Abraham C. Van Der Schee

Abraham C. Van Der Schee 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 of coating metal surfaces
    Patent number: 4215162
    Abstract: A process is provided for applying a coating of film-forming material to an acid-etchable metal without the use of electricity wherein the metal is immersed in an aqueous dispersion of a film-forming material cationically dispersed in water which also contains the carboxylic acid radical derived from acrylic acid or methacrylic acid or an oligomer thereof, and the resulting wet coating is dried on the surface of the metal.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: July 29, 1980
    Assignee: Akzo N.V.
    Inventors: Jan Kunnen, Abraham C. van der Schee
  • Coating metal by immersion
    Patent number: 4214022
    Abstract: A coating of a film-forming material is applied without electricity to a metal by immersing the metal in an aqueous dispersion which contains a film-forming material cationically dispersed in a cationic dispersion which contains a carboxylic acid radical capable of reacting with metal ions obtained by etching the metal to form a negatively charged complex in the dispersion.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: July 22, 1980
    Assignee: Akzo N.V.
    Inventors: Jan Kunnen, Abraham C. Van Der Schee