Patents by Inventor Manfred Berretz

Manfred Berretz 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).

  • Corrosion resistant glasses that contain chemical additives for application over metal substrates
    Patent number: 4196004
    Abstract: Protective coatings for alloys, mild steel, and enameling iron that has high resistance to corrosive attack and superior thermomechanical properties over ordinary glass or enamel coatings is disclosed. The desired properties are imparted to the coatings by various chemical additions during the milling procedures.
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: April 1, 1980
    Inventor: Manfred Berretz