Patents by Inventor Victor Charles Garbarini

Victor Charles Garbarini 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).

  • Etching of thin layers of reactive metals
    Patent number: 3992235
    Abstract: Thin films of reactive metals in contact with layers of more noble metals, are etched by an etchant including a reactive cathodic inhibitor. The etchant is a hydrofluroric acid-based composition with hydrogen peroxide, a water soluble tetrazolium compound (the inhibitor) and a surface modifier, such as an alcohol or a more complex surfactant. For exemplary compositions, the undercutting of masking layers of noble metals or photolithographic materials is limited to the same order as the reactive metal film thickness.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: November 16, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Victor Charles Garbarini