Patents by Inventor Gene Bertholdo

Gene Bertholdo 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).

  • Apparatus for removing deposited matter from a diffusion tube
    Patent number: 4294271
    Abstract: Apparatus for removing deposited matter, such as silicon and contaminants, from the interior of quartz diffusion tubes including an acid holding tank; a quartz-tube support for vertically holding the tube, neck down; a flexible seal for connecting the neck of the tube to the holding tank; an immersion pump and associated tubing for circulating the acid; and a spray head, connected with the pump and tubing, to spray the acid against the inside surface of the quartz tube to clean off the deposited matter. In order to prevent the acid sprayed on the inside surface from forming channels in the silicon or other deposited matter, two groups of nozzles are provided in the spray head--one group with its nozzles arranged at about 30.degree. from vertical, the other group with its nozzles arranged at about 60.degree. from vertical--so that the jets sprayed from each of the two groups are directed 90.degree.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: October 13, 1981
    Assignee: Dexon, Inc.
    Inventors: Josef Intrater, Gene Bertholdo, Janet Intrater