Patents by Inventor Kaius K. Polikarpus
Kaius K. Polikarpus 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).
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Patent number: 11307159Abstract: A resistor-assembly includes a substrate, a heater, a resistor-element, and conductive-leads. The substrate is formed of a ceramic-material. The heater heats the resistor-assembly. The resistor-element is formed of an ion-conducting material that overlies the substrate. The conductive-leads are formed of a catalytic-metal that are in communication with a gas and in electrical contact with the resistor-element. The resistor-element is characterized by a resistance-value influenced by an oxygen-presence in the gas when the resistor-element is heated by the heater such that a resistor-temperature is greater than a temperature-threshold.Type: GrantFiled: May 18, 2017Date of Patent: April 19, 2022Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Alfredo Ibarra Covarrubias, Kaius K. Polikarpus
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Publication number: 20180335398Abstract: A resistor-assembly includes a substrate, a heater, a resistor-element, and conductive-leads. The substrate is formed of a ceramic-material. The heater heats the resistor-assembly. The resistor-element is formed of an ion-conducting material that overlies the substrate. The conductive-leads are formed of a catalytic-metal that are in communication with a gas and in electrical contact with the resistor-element. The resistor-element is characterized by a resistance-value influenced by an oxygen-presence in the gas when the resistor-element is heated by the heater such that a resistor-temperature is greater than a temperature-threshold.Type: ApplicationFiled: May 18, 2017Publication date: November 22, 2018Inventors: Alfredo Ibarra Covarrubias, Kaius K. Polikarpus
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Patent number: 9429540Abstract: An exhaust sensor comprises a sensing electrode and a reference electrode each in contact with an electrolyte. At least one of the sensing electrode and the reference electrode are formed by depositing an electrode precursor material on an electrolyte precursor material and sintering the combination at a sufficient temperature for a sufficient time to achieve densification of the electrolyte, wherein the electrode precursor material comprises an alkali salt. Electrode patterns having enhanced perimeter ratios are also disclosed. The resulting exhaust sensor is capable of providing a usable output at a reduced operating temperature.Type: GrantFiled: June 3, 2011Date of Patent: August 30, 2016Assignee: Delphi Technologies, Inc.Inventors: Eric P. Clyde, Walter T. Symons, Kaius K. Polikarpus, James D. Ward, Marsha E. Nottingham
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Patent number: 9354215Abstract: A gas sensor includes a sensing element formed on a ceramic substrate, an insulator surrounding at least a portion of the sensing element, and a metal shell surrounding at least a portion of the sensing element. The gas sensor further includes a cured ceramic adhesive structure bonded to the insulator and the sensing element, to the insulator and the metal shell, or to the sensing element and the metal shell. The ceramic adhesive structure is disposed so as to mitigate gas leakage through the gas sensor.Type: GrantFiled: August 26, 2013Date of Patent: May 31, 2016Assignee: Delphi Technologies, Inc.Inventors: Evan J D Schaefer, Kaius K. Polikarpus, Wayne M. Chadwick, Mark S. Alexander
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Publication number: 20150052976Abstract: A gas sensor includes a sensing element formed on a ceramic substrate, an insulator surrounding at least a portion of the sensing element, and a metal shell surrounding at least a portion of the sensing element. The gas sensor further includes a cured ceramic adhesive structure bonded to the insulator and the sensing element, to the insulator and the metal shell, or to the sensing element and the metal shell. The ceramic adhesive structure is disposed so as to mitigate gas leakage through the gas sensor.Type: ApplicationFiled: August 26, 2013Publication date: February 26, 2015Inventors: EVAN JD SCHAEFER, KAIUS K. POLIKARPUS, WAYNE M. CHADWICK, MARK S. ALEXANDER
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Publication number: 20130264203Abstract: A planar device includes a heating circuit that is disposed between ceramic layers and co-fired with the ceramic. The heating circuit comprises palladium, and the co-firing of the palladium and ceramic is performed in an oxidizing atmosphere. The formation of defects in the planar device that would otherwise be induced as a result of the palladium oxidizing during the co-firing process is prevented by control of the firing profile, by the geometry of the pattern of the heating circuit, and/or by modifying the palladium to reduce its tendency to oxidize.Type: ApplicationFiled: June 4, 2011Publication date: October 10, 2013Applicant: DELPHI TECHNOLOGIES, INC.Inventors: Oscar Gamboa, Walter T. Symons, Eric P. Clyde, Kaius K. Polikarpus, Debabrata Sarkar
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Publication number: 20130092538Abstract: An exhaust sensor comprises a sensing electrode and a reference electrode each in contact with an electrolyte. At least one of the sensing electrode and the reference electrode are formed by depositing an electrode precursor material on an electrolyte precursor material and sintering the combination at a sufficient temperature for a sufficient time to achieve densification of the electrolyte, wherein the electrode precursor material comprises an alkali salt. Electrode patterns having enhanced perimeter ratios are also disclosed. The resulting exhaust sensor is capable of providing a usable output at a reduced operating temperature.Type: ApplicationFiled: June 3, 2011Publication date: April 18, 2013Applicant: DELPHI TECHNOLOGIES, INC.Inventors: Eric P. Clyde, Walter T. Symons, Kaius K. Polikarpus, James D. Ward, Marsha E. Nottingham
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Patent number: 7828955Abstract: One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials, and an electrically conducting material selected from the group consisting of electrically conductive metals, electrically conductive metal oxides, and combinations comprising at least one of the foregoing.Type: GrantFiled: July 10, 2006Date of Patent: November 9, 2010Assignee: Delphi Technologies, Inc.Inventors: Da Yu Wang, Walter T. Symons, Robert J. Farhat, Carlos A. Valdes, Elizabeth M. Briggs, Kaius K. Polikarpus, Joachim Kupe
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Publication number: 20080283398Abstract: Soot sensing systems and soot sensors are provided. In one exemplary embodiment, a soot sensor includes a non-conductive substrate and a first electrode disposed on the non-conductive substrate. The soot sensor further includes a second electrode disposed on the non-conductive substrate and spaced away from the first electrode. The soot sensor further includes a first protective layer disposed over at least a portion of the first electrode. The soot sensor further includes a second protective layer disposed over at least a portion of the second electrode. Further, an electrical parameter between the first and second electrodes is indicative of an amount of soot disposed on the non-conductive substrate between the first and second electrodes.Type: ApplicationFiled: May 16, 2007Publication date: November 20, 2008Inventors: Charles Scott Nelson, Kaius K. Polikarpus, Walter T. Symons
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Patent number: 7280028Abstract: A method for manufacturing a planar sensor, comprises disposing a film of a material on a substrate, wherein the material is selected from the group consisting of platinum, rhodium, palladium and mixtures and alloys comprising at least one of the foregoing materials; annealing the material; measuring a resistance value of the material; laser trimming the annealed material; heat treating the laser trimmed material; and laser trimming the heat treated material to form the sensor.Type: GrantFiled: March 17, 2004Date of Patent: October 9, 2007Assignee: Delphi Technologies, Inc.Inventors: Charles Scott Nelson, Paul Casey Kikuchi, James Paul Vargo, Douglas James Behrendt, Walter T. Symons, William J. LaBarge, Kaius K. Polikarpus, Rick D. Kerr, Jinping Zhang, Paul R. Daniel, Jr.
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Patent number: 7138604Abstract: A sensor may comprise a first electrode and a second electrode in mutual ionic communication with an electrolyte, a first socket disposed near a rear portion of a sensor element, a first lead disposed in electrical communication with the first electrode and in physical contact with the first socket and configured for electrical communication with a first terminal element, a second socket disposed near the rear portion of the sensor element, and a second lead disposed in electrical communication with the second electrode and in physical contact with the second socket and configured for electrical communication with a second terminal element. The first socket is disposed through at least one of an edge and an end of the sensor element, and the second socket is disposed through at least one of the edge and the end of the sensor element.Type: GrantFiled: April 6, 2004Date of Patent: November 21, 2006Assignee: Delphi Technologies, Inc.Inventors: Kaius K. Polikarpus, Walter T. Symons, Charles Scott Nelson, Rick D. Kerr
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Patent number: 7074319Abstract: One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials, and an electrically conducting material selected from the group consisting of electrically conductive metals, electrically conductive metal oxides, and combinations comprising at least one of the foregoing.Type: GrantFiled: December 11, 2003Date of Patent: July 11, 2006Assignee: Delphi Technologies, Inc.Inventors: Da Yu Wang, Walter T. Symons, Robert J. Farhat, Carlos A. Valdes, Elizabeth M. Briggs, Kaius K. Polikarpus, Joachim Kupe
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Patent number: 7048844Abstract: A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode and a cell isolation layer disposed on the inner pump electrode on a side opposite the pump cell electrolyte, wherein the outer electrode is in fluid communication with a reducing gas. A reference cell is in operable communication with the pump cell, the reference cell comprising an outer reference electrode and an inner reference electrode, and a reference cell electrolyte interposed between the outer reference electrode and the inner reference electrode.Type: GrantFiled: November 15, 2002Date of Patent: May 23, 2006Assignee: Delphi Technologies, Inc.Inventors: David K. Chen, Da Yu Wang, Yingjie Lin, Raymond L. Bloink, Devesh Srivastava, Walter T. Symons, Kaius K. Polikarpus
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Patent number: 6984298Abstract: Disclosed herein is a ceramic part, gas sensor, and method for making the gas sensor. The ceramic part comprises: an insulating layer affixed to a substrate wherein the insulating layer comprising Al2O3 particles; and a glass comprising about 45 to about 69 mole percent SiO2, 0 to about 9 mole percent B2O3, 0 to about 26 mole percent Al2O3, 0 and 25 mole percent SrO, and about 10 to about 26 mole percent RE2O3, where RE2O3 is selected from the group consisting of Y2O3, three valent rare earth oxides, and combinations comprising at least one of the foregoing. In one embodiment of a ceramic part, a gas sensor comprises: an electrolyte layer having disposed on opposite sides thereof a first electrode and a second electrode; and an insulating layer that is in intimate contact with the second electrode, wherein the insulating layer comprises alumina and frit.Type: GrantFiled: January 9, 2002Date of Patent: January 10, 2006Assignee: Delphi Technologies, Inc.Inventors: Kaius K. Polikarpus, Walter T. Symons, Kerry Gross, William J. LaBarge, Suresh Baskaran, Craig Fredrick Habeger, John David Vienna, Jarrod Vincent Crum, John Gerard Darab, Timothy R. Armstrong
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Publication number: 20040217098Abstract: A sensor may comprise a first electrode and a second electrode in mutual ionic communication with an electrolyte, a first socket disposed near a rear portion of a sensor element, a first lead disposed in electrical communication with the first electrode and in physical contact with the first socket and configured for electrical communication with a first terminal element, a second socket disposed near the rear portion of the sensor element, and a second lead disposed in electrical communication with the second electrode and in physical contact with the second socket and configured for electrical communication with a second terminal element. The first socket is disposed through at least one of an edge and an end of the sensor element, and the second socket is disposed through at least one of the edge and the end of the sensor element.Type: ApplicationFiled: April 6, 2004Publication date: November 4, 2004Inventors: Kaius K. Polikarpus, Walter T. Symons, Charles Scott Nelson, Rick D. Kerr
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Publication number: 20040202227Abstract: A method for manufacturing a planar sensor, comprises disposing a film of a material on a substrate, wherein the material is selected from the group consisting of platinum, rhodium, palladium and mixtures and alloys comprising at least one of the foregoing materials; annealing the material; measuring a resistance value of the material; laser trimming the annealed material; heat treating the laser trimmed material; and laser trimming the heat treated material to form the sensor.Type: ApplicationFiled: March 17, 2004Publication date: October 14, 2004Inventors: Charles Scott Nelson, Paul Casey Kikuchi, James Paul Vargo, Douglas James Behrendt, Walter T. Symons, William J. LaBarge, Kaius K. Polikarpus, Rick D. Kerr, Jinping Zhang, Paul R. Daniel
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Patent number: 6793788Abstract: One embodiment of a method of fabricating a sensor element for an exhaust gas sensing device, comprises disposing an electrolyte in ionic communication with a sensing electrode and a reference electrode to form the sensor element. The sensing electrode comprises an activator comprising silica and an oxide of an element. The element is selected from the group consisting of alkaline earth elements, rare earth elements, and combinations comprising at least one of the foregoing elements.Type: GrantFiled: April 5, 2002Date of Patent: September 21, 2004Assignee: Delphi Technologies, Inc.Inventors: Da Yu Wang, Kaius K. Polikarpus, Walter T. Symons, Frederick L. Kennard III, Ming-Cheng Wu
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Publication number: 20040118703Abstract: One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials, and an electrically conducting material selected from the group consisting of electrically conductive metals, electrically conductive metal oxides, and combinations comprising at least one of the foregoing.Type: ApplicationFiled: December 11, 2003Publication date: June 24, 2004Inventors: Da Yu Wang, Walter T. Symons, Robert J. Farhat, Carlos A. Valdes, Elizabeth M. Briggs, Kaius K. Polikarpus, Joachim Kupe
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Publication number: 20040094416Abstract: A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode and a cell isolation layer disposed on the inner pump electrode on a side opposite the pump cell electrolyte, wherein the outer electrode is in fluid communication with a reducing gas. A reference cell is in operable communication with the pump cell, the reference cell comprising an outer reference electrode and an inner reference electrode, and a reference cell electrolyte interposed between the outer reference electrode and the inner reference electrode.Type: ApplicationFiled: November 15, 2002Publication date: May 20, 2004Inventors: David K. Chen, Da Yu Wang, Yingjie Lin, Raymond L. Bloink, Devesh Srivastava, Walter T. Symons, Kaius K. Polikarpus
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Patent number: 6638416Abstract: A hydrogen sensor and process for measuring hydrogen gas concentrations includes a pump cell and a measuring cell. The pump cell includes a first conducting electrolyte layer having a top and a bottom surface, and an electrode disposed on the top and bottom surfaces, wherein the top electrode is in communication with an unknown concentration of hydrogen gas. The measuring cell includes a second conducting electrolyte layer having a top and a bottom surface, and an electrode disposed on the top and bottom surfaces, wherein the bottom electrode is in communication with a reference gas source. A diffusion-limiting barrier is disposed between the pump cell bottom electrode and the measuring cell top electrode, wherein hydrogen diffusion through the diffusion-limiting barrier is controlled by a Knudsen diffusion mechanism at hydrogen concentrations greater than about 40%.Type: GrantFiled: September 24, 2001Date of Patent: October 28, 2003Assignee: Delphi Technologies, Inc.Inventors: Da Yu Wang, David K. Chen, Kaius K. Polikarpus, Walter T. Symons