Patents by Inventor Joseph J. Talghader

Joseph J. Talghader 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: 8704179
    Abstract: The present invention provides thermal detectors having an optical cavity that is optimized to couple light into a sensor. Light that is on resonance is coupled with the sensor with as high as 100% efficiency, while light off resonance is substantially reflected away. Light that strikes the sensor from the sides (i.e. not on the optical cavity axis) only interacts minimally with sensor because of the reduced absorption characteristics of the sensor. Narrowband sensors in accordance with the present invention can gain as much as 100% of the signal from one direction and spectral band, while receiving only a fraction of the normal radiation noise, which originates from all spectral bands and directions.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: April 22, 2014
    Assignee: Regents of the University of Minnesota
    Inventor: Joseph J. Talghader
  • Patent number: 8629398
    Abstract: High sensitivity thermal detectors that perform beyond the blackbody radiation noise limit are described. Thermal detectors, as described herein, use spectrally selective materials that absorb strongly in the wavelength region of the desired signal but only weakly or not at all in the primary thermal emission band. Exemplary devices that can be made in accordance with the present invention include microbolometers containing semiconductors that absorb in the MWIR and/or THz range but not the LWIR.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: January 14, 2014
    Assignee: The Regents of the University of Minnesota
    Inventors: Joseph J. Talghader, Ryan P. Shea, Anand S. Gawarikar
  • Publication number: 20110240860
    Abstract: High sensitivity thermal detectors that perform beyond the blackbody radiation noise limit are described. Thermal detectors, as described herein, use spectrally selective materials that absorb strongly in the wavelength region of the desired signal but only weakly or not at all in the primary thermal emission band. Exemplary devices that can be made in accordance with the present invention include microbolometers containing semiconductors that absorb in the MWIR and/or THz range but not the LWIR.
    Type: Application
    Filed: May 29, 2009
    Publication date: October 6, 2011
    Inventors: Joseph J. Talghader, Ryan P. Shea, Anand S. Gawarikar
  • Publication number: 20100294935
    Abstract: The present invention provides thermal detectors having an optical cavity that is optimized to couple light into a sensor. Light that is on resonance is coupled with the sensor with as high as 100% efficiency, while light off resonance is substantially reflected away. Light that strikes the sensor from the sides (i.e. not on the optical cavity axis) only interacts minimally with sensor because of the reduced absorption characteristics of the sensor. Narrowband sensors in accordance with the present invention can gain as much as 100% of the signal from one direction and spectral band, while receiving only a fraction of the normal radiation noise, which originates from all spectral bands and directions.
    Type: Application
    Filed: March 18, 2010
    Publication date: November 25, 2010
    Inventor: Joseph J. Talghader
  • Patent number: 7800066
    Abstract: The present invention provides thermal detectors having an optical cavity that is optimized to couple light into a sensor. Light that is on resonance is coupled with the sensor with as high as 100% efficiency, while light off resonance is substantially reflected away. Light that strikes the sensor from the sides (i.e. not on the optical cavity axis) only interacts minimally with sensor because of the reduced absorption characteristics of the sensor. Narrowband sensors in accordance with the present invention can gain as much as 100% of the signal from one direction and spectral band, while receiving only a fraction of the normal radiation noise, which originates from all spectral bands and directions.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: September 21, 2010
    Assignee: Regents of the University of Minnesota Office for Technology Commercialization
    Inventor: Joseph J. Talghader
  • Publication number: 20080217539
    Abstract: The present invention provides thermal detectors having an optical cavity that is optimized to couple light into a sensor. Light that is on resonance is coupled with the sensor with as high as 100% efficiency, while light off resonance is substantially reflected away. Light that strikes the sensor from the sides (i.e. not on the optical cavity axis) only interacts minimally with sensor because of the reduced absorption characteristics of the sensor. Narrowband sensors in accordance with the present invention can gain as much as 100% of the signal from one direction and spectral band, while receiving only a fraction of the normal radiation noise, which originates from all spectral bands and directions.
    Type: Application
    Filed: December 6, 2007
    Publication date: September 11, 2008
    Inventor: Joseph J. Talghader
  • Patent number: 7145645
    Abstract: A system and method using an electronic light detector array, e.g., a CCD or a CMOS-based detector array, is used to acquire a visual image of a biological sample that includes biological material associated with a biological material holding structure (e.g., a DNA spot array on a DNA chip, protein bands in a 2-D gel, etc.). For example, fluorescence from a biological sample may be detected.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: December 5, 2006
    Assignee: Regents of the University of Minnesota
    Inventors: Martin Blumenfeld, Mark A. Sanders, Joseph J. Talghader, Jesse R. Grenz
  • Patent number: 6867851
    Abstract: An image detection apparatus comprises a light source and a holding apparatus adapted to hold a substrate on which a biological sample may be mounted. Light from the light source impinges on the biological sample and causes light that is representative of the sample to be emitted from the sample. A light detector is positioned in the path of the emitted light and is scanned across the emitted light. The emitted light may be focused on the light detector with an optical assembly. The emitted light may be generated by chromophores on probes in the biological sample.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: March 15, 2005
    Assignee: Regents of the University of Minnesota
    Inventors: Martin Blumenfeld, Joseph J. Talghader, Mark A. Sanders, Scott A. Nelson, Kraig Anderson, Steven A. Lewis
  • Patent number: 6784982
    Abstract: A device for detecting the pattern of polynucleic acid hybridization to a surface, the device includes (a) a positioning device for receiving a nucleic acid chip and keeping the chip in a sampling position, the nucleic acid chip being an object with a flat sample surface and an opposed surface that is joined to the sample surface by a thickness, with the sample surface having sequences of nucleic acids immobilized thereto, with each sequence being immobilized to a particular chip address. And, (b) an electronic light detector array, the detector array comprising detector pixels, the detector pixels being sensors located at particular detector pixel addresses, wherein the sampling position places the sample surface of the chip at a well-defined position relative to the electronic light detector array so that light leaving a chip address is substantially directed onto at least one detector pixel with an address that is correlated to the chip address.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: August 31, 2004
    Assignee: Regents of the University of Minnesota
    Inventors: Martin Blumenfeld, Joseph J. Talghader, Mark A. Sanders
  • Publication number: 20030151735
    Abstract: An image detection apparatus comprises a light source and a holding apparatus adapted to hold a substrate on which a biological sample may be mounted. Light from the light source impinges on the biological sample and causes light that is representative of the sample to be emitted from the sample. A light detector is positioned in the path of the emitted light and is scanned across the emitted light. The emitted light may be focused on the light detector with optical assembly. The emitted light may be generated by chromophores on probes in the biological sample.
    Type: Application
    Filed: August 2, 2002
    Publication date: August 14, 2003
    Inventors: Martin Blumenfeld, Joseph J. Talghader, Mark A. Sanders, Scott A. Nelson, Kraig Anderson, Steven A. Lewis
  • Publication number: 20020018199
    Abstract: A system and method using an electronic light detector array, e.g., a CCD or a CMOS-based detector array, is used to acquire a visual image of a biological sample that includes biological material associated with a biological material holding structure (e.g., a DNA spot array on a DNA chip, protein bands in a 2-D gel, etc.). For example, fluorescence from a biological sample may be detected.
    Type: Application
    Filed: May 10, 2001
    Publication date: February 14, 2002
    Inventors: Martin Blumenfeld, Mark A. Sanders, Joseph J. Talghader, Jesse R. Grenz