Patents by Inventor John T. Vayda

John T. Vayda 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).

  • Wafer boat with arcuate wafer support arms
    Patent number: 6488497
    Abstract: A vertical ceramic wafer boat for supporting a silicon wafer having a predetermined radius R. The wafer boat comprises a base and a pair of column racks. The column racks extend generally vertically upwards from the base. Each column rack includes at least one arm having an arcuate section. Each arcuate section is sized to provide substantial support for a 0.7 R boundary region of the wafer and spans an arc of less than 180 degrees.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: December 3, 2002
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: Richard Buckley, John T. Vayda
  • Hydrogen torch
    Patent number: 6007883
    Abstract: A hydrogen torch comprising concentric inner and outer fluid delivery tubes, wherein;a) the outer tube comprises silica, andb) the inner tube comprises silicon carbide.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: December 28, 1999
    Assignee: Saint-Gobain Industrial Ceramics, Inc.
    Inventors: Bryan D. Foster, William J. Elliot, John T. Vayda
  • Hydrogen torch having concentric tubes and reverse ball joint connection
    Patent number: 5526984
    Abstract: A hydrogen torch comprising concentric inner and outer fluid delivery tubes wherein the outer tube comprises silica and the inner tube comprises silicon carbide. One end of the inner tube is connected to a third tube comprised of silica which has an inlet in fluid connection with a hydrogen supply line. The outer tube is in fluid connection with an oxygen supply line. A reverse ball joint connection is used to join the tubes and defines an annulus between the inner and outer tubes through which the oxygen can flow and be isolated from the hydrogen flowing within the inner tube.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: June 18, 1996
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corp.
    Inventors: Bryan D. Foster, William J. Elliot, John T. Vayda
  • Ceramic igniters and process for making same
    Patent number: 5191508
    Abstract: A process for producing a ceramic igniter comprising forming a slot in a green igniter body prior to densification and inserting into the slot an electrically non-conductive material is described. In addition, a ceramic igniter containing a slot insert produced by the process of the invention is disclosed. The inventon is particularly directed to single and double hairpin-shaped igniters.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: March 2, 1993
    Assignee: Norton Company
    Inventors: Scott R. Axelson, John T. Vayda
  • Castable refractory
    Patent number: 4762811
    Abstract: A refractory composition capable, when mixed with water, of forming a hydraulic-setting castable refractory resistant to aluminum penetration and adhesion and with good load bearing properties consisting essentially of a refractory aggregate, a binder for said refractory aggregate, and an aluminum anti-adhesive agent; said agent consisting of a fine powder barium sulfate and a powdered zinc borosilicate frit in a weight ratio of 1.5:1 to 5:1.
    Type: Grant
    Filed: January 21, 1987
    Date of Patent: August 9, 1988
    Assignee: Dresser Industries, Inc.
    Inventors: John T. Vayda, George H. Criss