Patents by Inventor Marcos Nassar

Marcos Nassar 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).

  • Patent number: 9470594
    Abstract: A differential capacitive pressure sensor of an embodiment of the present invention has first and second diaphragms positioned on opposing sides of a single substrate. Each diaphragm of the pressure transducer is configured to be exposed to a transient fluid, with the first and second pressure transducers being arranged with their respective deflection surfaces directed outwardly from each other. The differential capacitive pressure sensor may be configured to output representations of differential and common mode pressure of the transient fluids, where a representation of a common mode is cancelled in generating the representation of the differential pressure. The transient fluids may be the same fluid at different locations within a flow path. The diaphragms may be constructed from a ceramic material to be able to withstand exposure to corrosive or caustic fluids.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: October 18, 2016
    Assignee: Sensata Technologies, Inc.
    Inventors: William D. Cornwell, Mark L. Urban, Marcos A. Nassar
  • Patent number: 9383283
    Abstract: A capacitive pressure transducer of an embodiment of the present invention capacitively couples two electrodes on a substrate with a diaphragm electrode to form a transducing circuit without the need for a physical connection between the electrodes. Embodiments of the present invention have a substrate with a coupling electrode and a sensing electrode and an attached diaphragm with a diaphragm electrode. A spacer positioned between the substrate and the diaphragm provides for a cavity that defines a gap between the sensing electrode and the diaphragm electrode. A dielectric spacer may be positioned over the coupling electrode to increase the capacitance between the coupling electrode and the diaphragm electrode. The capacitive pressure transducer has similar electrical characteristics as existing capacitive pressure transducers, is easier to manufacture, and has long-term reliability and durability improvements brought about by the elimination of mechanical interconnects and additional conductive materials.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: July 5, 2016
    Assignee: Sensata Technologies, Inc.
    Inventors: Marcos A. Nassar, Ernest W. Cordan, Mark L. Urban
  • Publication number: 20150204747
    Abstract: A differential capacitive pressure sensor of an embodiment of the present invention has first and second diaphragms positioned on opposing sides of a single substrate. Each diaphragm of the pressure transducer is configured to be exposed to a transient fluid, with the first and second pressure transducers being arranged with their respective deflection surfaces directed outwardly from each other. The differential capacitive pressure sensor may be configured to output representations of differential and common mode pressure of the transient fluids, where a representation of a common mode is cancelled in generating the representation of the differential pressure. The transient fluids may be the same fluid at different locations within a flow path. The diaphragms may be constructed from a ceramic material to be able to withstand exposure to corrosive or caustic fluids.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 23, 2015
    Applicant: Kavlico Corporation
    Inventors: William D. Cornwell, Mark L. Urban, Marcos A. Nassar
  • Publication number: 20150198495
    Abstract: A capacitive pressure transducer of an embodiment of the present invention capacitively couples two electrodes on a substrate with a diaphragm electrode to form a transducing circuit without the need for a physical connection between the electrodes. Embodiments of the present invention have a substrate with a coupling electrode and a sensing electrode and an attached diaphragm with a diaphragm electrode. A spacer positioned between the substrate and the diaphragm provides for a cavity that defines a gap between the sensing electrode and the diaphragm electrode. A dielectric spacer may be positioned over the coupling electrode to increase the capacitance between the coupling electrode and the diaphragm electrode. The capacitive pressure transducer has similar electrical characteristics as existing capacitive pressure transducers, is easier to manufacture, and has long-term reliability and durability improvements brought about by the elimination of mechanical interconnects and additional conductive materials.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 16, 2015
    Applicant: Kavlico Corporation
    Inventors: Marcos A. Nassar, Ernest W. Cordan, Mark L. Urban
  • Patent number: 7775118
    Abstract: Described herein is the sense element assembly for a capacitive pressure sensor and method for creating same that has increased sensitivity without additional size. The sense element assembly and method includes fabricating an off-centered elliptically shaped center electrode, at least one elliptical annular-like electrode around the center electrode, a ground electrode and a method for fusing the layers together to optimize sensitivity.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: August 17, 2010
    Assignee: Custom Sensors & Technologies, Inc.
    Inventors: Gary L. Casey, Marcos Nassar, Nhan Nguyen
  • Publication number: 20090266172
    Abstract: Described herein is the sense element assembly for a capacitive pressure sensor and method for creating same that has increased sensitivity without additional size. The sense element assembly and method includes fabricating an off-centered elliptically shaped center electrode, at least one elliptical annular-like electrode around the center electrode, a ground electrode and a method for fusing the layers together to optimize sensitivity.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 29, 2009
    Applicant: CUSTOM SENSORS & TECHNOLOGIES, INC.
    Inventors: Gary L. Casey, Marcos Nassar, Nhan Nguyen
  • Publication number: 20090061597
    Abstract: A method for the singulation of hybrid circuits from a pre-scribed plate containing hybrid circuits or made of other brittle materials. The method includes the steps of providing a platen used to support the hybrid plate and which has a surface comprised of a series of sections each angled downward from its adjacent section, aligning the plate on the platen so that the scribe lines align with the surface discontinuities at the angles between the sections, securing the plate to the platen with vacuum pressure, creating a pressure differential between a space above the plate and a space below the plate, and applying the pressure differential to sequentially break the plate along the pre-scribed lines by forcing the plate against the angles.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 5, 2009
    Applicant: KAVLICO CORPORATION
    Inventors: Alexander S. MENDOZA, Marcos NASSAR, Gary L. Casey
  • Patent number: 7395719
    Abstract: A preformed sensor housing including a conduit having an inside; a plug disposed within the conduit; and a deposit covering a portion of the plug and a portion of the conduit. A method is also disclosed for creating a thin film diaphragm on a housing including the step of inserting a sacrificial element into the housing; depositing a diaphragm material onto the sacrificial element and the housing; and removing the sacrificial element.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: July 8, 2008
    Assignee: Custom Sensors & Technologies, Inc.
    Inventors: Marcos Nassar, Scott McDaniel
  • Publication number: 20080110271
    Abstract: A preformed sensor housing including a conduit having an inside; a plug disposed within the conduit; and a deposit covering a portion of the plug and a portion of the conduit. A method is also disclosed for creating a thin film diaphragm on a housing including the step of inserting a sacrificial element into the housing; depositing a diaphragm material onto the sacrificial element and the housing; and removing the sacrificial element.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 15, 2008
    Applicant: KAVLICO CORPORATION
    Inventors: Marcos Nassar, Scott McDaniel
  • Publication number: 20070163355
    Abstract: A preformed senior housing including a conduit having an inside; a plug disposed within the conduit, and a deposit covering a portion of the plug and a portion of the conduit. A method is also disclosed for creating a thin film diaphragm on a housing including the step of inserting a sacrificial element into the housing; depositing a diaphragm material onto the sacrificial element and the housing; and removing the sacrificial element.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 19, 2007
    Applicant: Kavlico Corporation
    Inventors: Marcos Nassar, Scott McDaniel
  • Publication number: 20040178345
    Abstract: A highly efficient position or liquid level sensing system includes a central fluorescent fiber or rod, a transparent support for mounting the fluorescent fiber preferably in a liquid container or tank, and a float or other movable member extending around the fluorescent fiber for movement relative to the fiber. Light is directed from one end of the fluorescent fiber parallel to and around the fiber; and the side of the float or movable member facing the light reflects the incident light inward toward the fluorescent fiber. A first detector receives radiation from one end of the fiber. Detectors may be provided at both ends of the fiber, and the two outputs may be combined sustractively to provide a substantially linear signal output relative to the position of the float or movable member.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 16, 2004
    Applicant: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar, Michael C. Shum
  • Patent number: 6584853
    Abstract: A corrosion proof pressure transducer for measuring exhaust gas pressure includes a chip with a semiconductive diaphragm, electronics, and conductive pads thereon; with leads sonically bonded to the pads. To preclude degradation of the transducer by internal combustion engine exhaust gases, the chip may have (1) a thin glass passivation layer, (2) a vacuum deposited polymeric coating and (3) a layer of gel, thereon.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: July 1, 2003
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Patent number: 6553812
    Abstract: A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination. The sensors take measurements as oil flows through an internal combustion engine and provide an indication of the cause of a problem with oil in an engine. The system may also include a microcomputer and circuitry for generating an indication of dielectric constant and circuitry for generating an indication of the presence of contaminants within the engine. The system may also include an additional sensor measuring the temperature of oil within the system to adjust oil dielectric constant and viscosity indications. The capacitive dielectric sensor constitute the principal restriction in the flow path between an input high pressure sensing port and an outlet low pressure port.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: April 29, 2003
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Publication number: 20030070489
    Abstract: A corrosion proof pressure transducer for measuring exhaust gas pressure includes a chip with a semiconductive diaphragm, electronics, and conductive pads thereon; with leads sonically bonded to the pads. To preclude degradation of the transducer by internal combustion engine exhaust gases, the chip may have (1) a thin glass passivation layer, (2) a vacuum deposited polymeric coating and (3) a layer of gel, thereon.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Applicant: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Publication number: 20020011095
    Abstract: A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination. The sensors take measurements as oil flows through an internal combustion engine and provide an indication of the cause of a problem with oil in an engine. The system may also include a microcomputer and circuitry for generating an indication of dielectric constant and circuitry for generating an indication of the presence of contaminants within the engine. The system may also include an additional sensor measuring the temperature of oil within the system to adjust oil dielectric constant and viscosity indications. The capacitive dielectric sensor constitute the principal restriction in the flow path between an input high pressure sensing port and an outlet low pressure port.
    Type: Application
    Filed: September 17, 2001
    Publication date: January 31, 2002
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Patent number: 6279407
    Abstract: A combined mechanical linkage and force-measuring assembly includes a central capacitive force sensor, in which force applied to the sensor causes the flexing of a diaphragm toward and away from a substrate, and a change in the capacitance between two conductive surfaces on the diaphragm and the substrate is sensed and processed to indicate the direction and magnitude of the force applied to the linkage. The linkage may have two parts coupled together by a flange which flexes under applied forces, to change the spacing of the conductive surfaces.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: August 28, 2001
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Patent number: 5907278
    Abstract: A sensor assembly for measuring characteristics of motor oil in a vehicle includes a housing adapted to be mechanically coupled to a vehicle for receiving motor oil of the vehicle and at least one capacitive sensor including sensing electrodes positioned relative to the housing to measure characteristics of motor oil between the sensing electrodes. The sensing electrodes are coated with a soot build-up inhibiting coating which, in a preferred embodiment, is a silicone coating. The at least one capacitive sensor include an oil level sensor and an oil deterioration sensor in a preferred embodiment.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: May 25, 1999
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Nhan Nguyen, Marcos A. Nassar
  • Patent number: 5900810
    Abstract: A sensor assembly includes a tilt sensor, an oil level sensor, an oil temperature sensor and an oil deterioration sensor, as well as associated output signal conditioning electronics integrated within a common assembly. The sensor assembly is configured to receive a volume of motor oil proportional to a total volume of oil in an engine. The oil level sensor, oil temperature sensor and oil deterioration sensors include electrodes which are completely or partially immersed in the volume of motor oil depending upon the total volume of oil in the engine. The tilt sensor includes only two electrodes both of which are at least partially immersed within a controlled volume of dielectric fluid which is physically and electrically isolated from the volume of motor oil. One of the electrodes of the tilt sensor is completely immersed in the controlled volume of dielectric fluid independent of an angle of the tilt sensor relative to a vector representing forces such as gravity applied to the tilt sensor.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: May 4, 1999
    Assignee: Kavlico Corporation
    Inventors: Kyong M Park, Phuoc Vinh Le, Marcos A. Nassar
  • Patent number: 5824889
    Abstract: An oil deterioration and contamination sensor includes a housing, a substrate with a first capacitive plate mounted within the housing, a second capacitive plate mounted to the housing close to the first capacitive plate, and a total reference capacitor which includes an external fixed reference capacitor. The second capacitive plate is mounted to the housing such that at least one fluid including oil freely circulates within a gap between the first and second capacitive plates thereby defining an oil deterioration and contamination sensor capacitor. The respective capacitances of the oil deterioration and contamination capacitor and the total reference capacitor provide an indication of a dielectric constant of the at least one fluid including oil within the gap.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: October 20, 1998
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar
  • Patent number: 5540086
    Abstract: An oil deterioration sensor includes a housing, a substrate with a first capacitive plate mounted within the housing, a second capacitive plate mounted to the housing close to the first capacitive plate, and a total reference capacitor which includes an external fixed reference capacitor. The second capacitive plate is mounted to the housing such that oil freely circulates within a gap between the first and second capacitive plates thereby defining an oil deterioration sensor capacitor. The respective capacitances of the oil deterioration capacitor and the total reference capacitor provide an engine oil deterioration indication for the oil within the gap. The first capacitive plate is divided into a major sensing area, and a minor sensing area covering a relatively small portion of the total area of the first capacitive plate. The major sensing area and the second capacitive plate form the oil deterioration sensor capacitor.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Kavlico Corporation
    Inventors: Kyong M. Park, Marcos A. Nassar