Patents by Inventor John S. Lubert

John S. Lubert 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).

  • Regeneration of ferric chloride etchants
    Patent number: 5227010
    Abstract: Ferric chloride etching composition is regenerated by introducing such along with oxygen gas into a static mixing zone.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: July 13, 1993
    Assignee: International Business Machines Corporation
    Inventors: John S. Lubert, Donald M. McGarigle