Patents by Inventor Frederic Gruber

Frederic Gruber 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).

  • One step film-forming phosphatization of metallic surfaces and composition for effecting same
    Patent number: 4006041
    Abstract: The present invention relates to a process for protecting metal surfaces from corrosion, and more particularly to a method for forming a phosphatized film on metal surfaces and a composition for accomplishing said result.
    Type: Grant
    Filed: September 24, 1975
    Date of Patent: February 1, 1977
    Inventors: Juan Brugarolas Fabregas, Frederic Gruber