Patents Represented by Attorney James Theodosopoulos

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  • Electric heater with thermistor temperature control
    Patent number: 5111527
    Abstract: A forced gas electric heater has a serpentine heating element in series with a preheat coil. Gas to be heated first flows through the preheat coil before flowing through the serpentine heating element. A thermistor is disposed between two adjacent turns of the preheat coil. The thermistor controls the "on" time of a solid state power control device which is in series with the preheat coil and the serpentine heating element.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: May 5, 1992
    Assignee: GTE Products Corporation
    Inventors: Johathan B. Arold, Joan L. Mishou, Charles R. Parent, Joseph P. Stark, Edward A. Webb
  • Hydrometallurgical process for producing irregular shaped powders with readily oxidizable alloying elements
    Patent number: 5102454
    Abstract: Composite powders containing a first group of metals of iron, cobalt, nickel and molybdenum in specific ratios and one or more oxidizable metals can be formed by forming an aqueous solution containing first group of metals, forming solid material of the metals from the solution, reducing the solid material to a metallic powder, combining that powder with one or more easily oxidizable metals in an non-oxidizing atmosphere.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: April 7, 1992
    Assignee: GTE Products Corporation
    Inventors: Walter A. Johnson, Nelson E. Kopatz, Joseph E. Ritsko
  • Insulation displacement terminal for telecommunication devices
    Patent number: 5102347
    Abstract: An insulation displacement terminal comprises a clamp having an internally threaded tubular portion to accommodate a screw. An insulated telephone wire can be inserted into an aperture in the clamp. When the screw is screwed all the way into the clamp, a cylindrical blunt edge thereon will displace the insulation on the wire and make contact with the metal core of the wire. There is a sealing material in the terminal to seal around the point of contact. A well and axial hole in the screw can accommodate sealing material that is displaced by the screw.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: April 7, 1992
    Assignee: GTE Products Corporation
    Inventors: Mark P. Cote, Tom W. Kroll, John J. Napiorkowski
  • Ambient compensated circuit breaker
    Patent number: 5103202
    Abstract: An electrical circuit breaker comprises a metal base having a raised step to which an elongated compensator bimetal is welded. A metal cover is secured to the base but is insulated therefrom. An elongated armature bimetal is welded to a step in the metal cover and is substantially parallel to the compensator bimetal. The high expansion sides of both the compensator and the armature face downwards, towards the base. An insulated heater wire is wrapped around the armature and is electrically connected between the armature and the base.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: April 7, 1992
    Assignee: GTE Products Corporation
    Inventors: John D. Lennon, Douglas C. Carbone
  • Platinum electrode bonded to ceramic
    Patent number: 5095759
    Abstract: A high gold content brazing alloy containing titanium is used to braze a platinum electrode to a ceramic cylinder.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: March 17, 1992
    Assignee: GTE Products Corporation
    Inventors: Howard Mizuhara, Toshimasa Oyama
  • Brazing alloy of copper, silicon, titanium, aluminum
    Patent number: 5087416
    Abstract: A brazing alloy for brazing ceramics has the following composition, in weight percent: 1 to 4 silicon; 1 to 5 titanium; 0.5 to 6 aluminum; 89 to 96 copper.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: February 11, 1992
    Assignee: GTE Products Corporation
    Inventor: Howard Mizuhara
  • Removal of potassium from ammonium molybdate
    Patent number: 5082637
    Abstract: Potassium impurity is removed from ammonium molybdate by dissolving the ammonium molybdate in hot acid, allowing the acid solution to cool whereby the ammonium molybdate precipitates out of the solution as molybdenum trioxide and then separating, washing and drying the molybdenum trioxide.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: January 21, 1992
    Assignee: GTE Products Corporation
    Inventors: Michael J. Cheresnowsky, Timothy J. Hoffman
  • Brazed ceramic-metal composite
    Patent number: 5043229
    Abstract: A composite consists of a ceramic brazed to another ceramic by means of a joint layer therebetween. The joint layer comprises a porous metal interlayer and an active brazing filler metal penetrating through the porous metal interlayer.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: August 27, 1991
    Assignee: GTE Products Corporation
    Inventor: Howard Mizuhara
  • Evaporating boat having parallel inclined cavities
    Patent number: 5035201
    Abstract: A self-resistance-heated electrically-conductive refractory evaporating boat has inclined cavities on its two horizontal surfaces, the cavities being parallel to each other.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: July 30, 1991
    Assignee: GTE Products Corporation
    Inventors: Edward D. Parent, Oliver S. Smith
  • Five pin protector module for telephone circuits
    Patent number: 5031067
    Abstract: A five pin protector module for telephone circuits comprises two input pins, two output pins and a grounding pin, all on an insulative base. The electrical current path between each input pin and its respective output pin comprises an electrically conductive arm, a current responsive assembly and an electrically conductive helical spring. The module contains a bidirectional voltage sensitive switch which prevents input voltage surges from reaching the output but, instead, conducts them to a grounding member to which the grounding pin is attached.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: July 9, 1991
    Assignee: GTE Products Corporation
    Inventors: Dan Kidd, John J. Napiorkowski, Bruce D. Atkinson
  • BaTiO.sub.3 ceramic temperature sensor with improved positive temperature coefficient of resistance
    Patent number: 5030386
    Abstract: Iron is used as a dopant in barium titanate semiconductor ceramic material to increase the positive temperature coefficient of resistance thereof. By the use of about 0.010 to 0.500 weight percent silica and about 0.0075 to 0.0190 weight percent iron, room temperature resisitivity can be kept adequately low while the temperature coefficient of resistance is significantly increased.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: July 9, 1991
    Assignee: GTE Products Corporation
    Inventors: Jay G. Saxton, Kazumasa Umeya
  • Silicon aluminum oxynitride material containing boron nitride
    Patent number: 5030598
    Abstract: A small amount of boron nitride is added to a mixture of silicon nitride, aluminum nitride and yttrium oxide, prior to sintering, to increase modulus of rupture and/or elastic modulus of the sintered material.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: July 9, 1991
    Assignee: GTE Products Corporation
    Inventor: Martin Y. Hsieh
  • Over-temperature sensor and protector for semiconductor devices
    Patent number: 4990987
    Abstract: Semiconductors can be damaged by overheating and to prevent such damage, the present invention utilizes a PTC thermistor which is in a heat sensing relationship with the semiconductor. Such thermistors demonstrate a sharp rise in resistance when the body temperature approaches or reaches the anomaly temperature. Electronic circuitry is designed to be sensitive to the resistance increase of the thermistor (caused by the semiconductor's heating) and shuts off the power to the semiconductor before it overheats.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: February 5, 1991
    Assignee: GTE Products Corporation
    Inventors: R. Wayne Boucher, William J. Shannon
  • Silicon nitride ceramic containing molybdenum disilicide
    Patent number: 4983554
    Abstract: A sintered silicon nitride ceramic having high stiffness consists of, in weight percent, 10.1 to 13.5 aluminum nitride, 6 to 7.5 yttrium oxide, 0.05 to 5 molybdenum disilicide, balance silicon nitride.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: January 8, 1991
    Assignee: GTE Products Corporation
    Inventor: Martin Y. Hsieh
  • Apparatus for making quartz glass crucibles
    Patent number: 4963178
    Abstract: A flat-bottomed quartz glass crucible for the manufacture of monocrystalline silicon is made by disposing granular quartz particles on a flat base in a cylindrical mold. A vacuum is drawn on the particles through vacuum holes in the base to retain the particles on the base while the base and mold are rotated, and while the particles are heated to fuse them into a quartz glass crucible shape.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 16, 1990
    Assignee: GTE Products Corporation
    Inventors: David R. Brown, Charles E. Frost, Jr., Kenneth A. White
  • Five pin protector module for telephone circuits
    Patent number: 4958254
    Abstract: A five pin protector module for telephone circuits comprises two input pins, two output pins and a grounding pin, all on an insulative base. The electrical current path between each input pin and its respective output pin comprises an electrically conductive arm, a current responsive assembly and an electrically conductive helical spring. The module contains a bidirectional voltage sensitive switch which prevents input voltage surges from reaching the output but, instead, conducts them to a grounding member to which the grounding pin is attached.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: September 18, 1990
    Assignee: GTE Products Corp.
    Inventors: Dan Kidd, John J. Napiorkowski, Bruce D. Atkinson
  • Method of brazing parts of Ti-Al-Nb alloy
    Patent number: 4957236
    Abstract: A brazing alloy-filler metal for brazing parts made of TiAlNb alloys has a brazing temperature of about 1020.degree. to 1250.degree. C. and a composition of, in weight percent, 37-75 titanium, 5-43 niobium, 20-58 nickel.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: September 18, 1990
    Assignee: GTE Products Corporation
    Inventor: Howard Mizuhara
  • Network interface jack
    Patent number: D315140
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: March 5, 1991
    Assignee: GTE Products Corporation
    Inventor: David H. Dowler
  • Electric forced air or gas heater
    Patent number: D318106
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: July 9, 1991
    Assignee: GTE Products Corporation
    Inventors: Jonathan B. Arold, Joan L. Mishou, Edward A. Webb
  • Electric forced air or gas heater
    Patent number: D318326
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: July 16, 1991
    Assignee: GTE Products Corporation
    Inventors: Jonathan B. Arold, Joan L. Mishou, Edward A. Webb, Ronald Blaisdell