Patents by Inventor Todd Ryan Tolliver
Todd Ryan Tolliver 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: 8962978Abstract: A semiconductor structure is described, including a semiconductor substrate and a semiconductor layer disposed on the semiconductor substrate. The semiconductor layer is both compositionally graded and structurally graded. Specifically, the semiconductor layer is compositionally graded through its thickness from substantially intrinsic at the interface with the substrate to substantially doped at an opposite surface. Further, the semiconductor layer is structurally graded through its thickness from substantially crystalline at the interface with the substrate to substantially amorphous at the opposite surface. Related methods are also described.Type: GrantFiled: December 3, 2010Date of Patent: February 24, 2015Assignee: General Electric CompanyInventors: Bastiaan Arie Korevaar, James Neil Johnson, Todd Ryan Tolliver, Theodore Carlton Kreutz, Xiaolan Zhang
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Patent number: 8294023Abstract: A radioisotope power sources that includes radioisotope nanoparticles and scintillator materials. An embodiment of the radioisotope power source includes radioisotope nanoparticles suspended within a polycrystalline scintillator; additional polycrystalline scintillator at least partially surrounding the polycrystalline scintillator with the radioisotope nanoparticles; and a photovoltaic device in light communication with the surrounding polycrystalline scintillator. A system that employs the radioisotope power source and a method of generating an electrical current are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: GrantFiled: October 29, 2009Date of Patent: October 23, 2012Assignee: General Electric CompanyInventors: Brent Allen Clothier, Matthew Christian Nielsen, Todd Ryan Tolliver, Allen Lawrence Garner
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Publication number: 20110100439Abstract: A radioisotope power sources that includes radioisotope nanoparticles and scintillator materials. An embodiment of the radioisotope power source includes radioisotope nanoparticles suspended within a polycrystalline scintillator; additional polycrystalline scintillator at least partially surrounding the polycrystalline scintillator with the radioisotope nanoparticles; and a photovoltaic device in light communication with the surrounding polycrystalline scintillator. A system that employs the radioisotope power source and a method of generating an electrical current are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: ApplicationFiled: October 29, 2009Publication date: May 5, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Brent Allen Clothier, Matthew Christian Nielsen, Todd Ryan Tolliver, Allen Lawrence Garner
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Publication number: 20110067753Abstract: A semiconductor structure is described, including a semiconductor substrate and a semiconductor layer disposed on the semiconductor substrate. The semiconductor layer is both compositionally graded and structurally graded. Specifically, the semiconductor layer is compositionally graded through its thickness from substantially intrinsic at the interface with the substrate to substantially doped at an opposite surface. Further, the semiconductor layer is structurally graded through its thickness from substantially crystalline at the interface with the substrate to substantially amorphous at the opposite surface. Related methods are also described.Type: ApplicationFiled: December 3, 2010Publication date: March 24, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Bastiaan Arie Korevaar, James Neil Johnson, Todd Ryan Tolliver, Theodore Carlton Kreutz, Xiaolan Zhang
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Patent number: 7906723Abstract: A semiconductor structure is described, including a semiconductor substrate and a semiconductor layer disposed on the semiconductor substrate. The semiconductor layer is both compositionally graded and structurally graded. Specifically, the semiconductor layer is compositionally graded through its thickness from substantially intrinsic at the interface with the substrate to substantially doped at an opposite surface. Further, the semiconductor layer is structurally graded through its thickness from substantially crystalline at the interface with the substrate to substantially amorphous at the opposite surface. Related methods are also described.Type: GrantFiled: April 30, 2008Date of Patent: March 15, 2011Assignee: General Electric CompanyInventors: Bastiaan Arie Korevaar, James Neil Johnson, Todd Ryan Tolliver, Theodore Carlton Kreutz, Xiaolan Zhang
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Patent number: 7852082Abstract: A remote control system for a modulatable device is provided. The remote control system comprises a receiver system coupled to the modulatable device and configured to obtain an output characteristic of the modulatable device, the receiver system being located remotely with respect to the modulatable device. The system further comprises a command signal setting system coupled to the receiver system and configured to use the output characteristic to generate a drive command signal and a bias system coupled to the command signal setting system and configured to receive the drive command signal and set a bias point of the modulatable device based on the drive command signal. The bias system is located locally with respect to the modulatable device. The command signal setting system and the bias system are coupled via a first optical conduit.Type: GrantFiled: July 22, 2008Date of Patent: December 14, 2010Assignee: General Electric CompanyInventors: Todd Ryan Tolliver, Joseph Alfred Iannotti, Glen Peter Koste, Selaka Bandara Bulumulla, Richard Louis Frey
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Publication number: 20100259823Abstract: An anti-reflection coating is described. The coating is disposed on a surface of a substrate. The anti-reflection coating includes an array of substantially transparent nanostructures having a primary axis substantially perpendicular to the surface of the substrate. The array of substantially transparent nanostructures is characterized by a graded refractive index. In some embodiments, each of the nanostructures has a substantially uniform cross-sectional area along the primary axis. Related methods and devices are also described.Type: ApplicationFiled: April 9, 2009Publication date: October 14, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Yangang Andrew Xi, Loucas Tsakalakos, Bastiaan Arie Korevaar, Todd Ryan Tolliver, Dalong Zhong
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Patent number: 7615009Abstract: A system and method for optical transmission of ultrasound data signals from a probe to an image processing system is provided. By using a silicon-based optical modulator to encode ultrasound data signals onto an optical signal, an optical transmission link between the ultrasound probe and the image processing system can achieve a high signal to noise ratio with a lower power input.Type: GrantFiled: February 22, 2007Date of Patent: November 10, 2009Assignee: General Electric CompanyInventors: Glen P. Koste, Samhita Dasgupta, Matthew Christian Nielsen, Min-Yi Shih, Robert John Filkins, Todd Ryan Tolliver, Bruno Hans Haider
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Publication number: 20090272435Abstract: A semiconductor structure is described, including a semiconductor substrate and a semiconductor layer disposed on the semiconductor substrate. The semiconductor layer is both compositionally graded and structurally graded. Specifically, the semiconductor layer is compositionally graded through its thickness from substantially intrinsic at the interface with the substrate to substantially doped at an opposite surface. Further, the semiconductor layer is structurally graded through its thickness from substantially crystalline at the interface with the substrate to substantially amorphous at the opposite surface. Related methods are also described.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Bastiaan Arie Korevaar, James Neil Johnson, Todd Ryan Tolliver, Theodore Carlton Kreutz, Xiaolan Zhang
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Patent number: 7580440Abstract: A device for emission of electromagnetic radiation comprises a source of atomic particles and a collector disposed to receive atomic particles from the source. The collector comprises an emission medium, the medium comprising a crystal having a spatial dimension in the range from about 10 nanometers to about 50 micrometers, wherein the emission medium has the capability to generate opposing charge pairs upon absorption of atomic particles from the source and to emit electromagnetic radiation upon recombination of the pairs. The emission may be via spontaneous emission or, in certain embodiments, by stimulated emission. A laser assembly comprising this device, and methods for making the device are also presented herein.Type: GrantFiled: October 27, 2005Date of Patent: August 25, 2009Assignee: GE Homeland Protection, Inc.Inventors: Steven Francis LeBoeuf, Radislav Alexandrovich Potyrailo, William Hullinger Huber, Rui Chen, Todd Ryan Tolliver, Alexei Vasilievich Vertiatchikh
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Publication number: 20080281185Abstract: A remote control system for a modulatable device is provided. The remote control system comprises a receiver system coupled to the modulatable device and configured to obtain an output characteristic of the modulatable device, the receiver system being located remotely with respect to the modulatable device. The system further comprises a command signal setting system coupled to the receiver system and configured to use the output characteristic to generate a drive command signal and a bias system coupled to the command signal setting system and configured to receive the drive command signal and set a bias point of the modulatable device based on the drive command signal. The bias system is located locally with respect to the modulatable device. The command signal setting system and the bias system are coupled via a first optical conduit.Type: ApplicationFiled: July 22, 2008Publication date: November 13, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Todd Ryan Tolliver, Joseph Alfred Iannotti, Glen Peter Koste, Selaka Bandara Bulumulla, Richard Louis Frey
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Patent number: 7411670Abstract: A photonic crystal based collection probe is provided. The probe includes a photonic crystal configured to guide and condition a beam of Raman scattered photons. Further, the device includes a spectrograph in optical communication with the photonic crystal and configured to receive Raman scattering from the photonic crystal. The device may be employed in a Raman spectrometer system.Type: GrantFiled: April 10, 2006Date of Patent: August 12, 2008Assignee: GE Homeland Protection, Inc.Inventors: Anis Zribi, Ayan Banerjee, Shivappa Ningappa Goravar, Shankar (nmn) Chandrasekaran, Sandip Maity, Glenn Scott Claydon, Stacey Joy Kennerly, Todd Ryan Tolliver, David Cecil Hays, Sheila Neumann Tandon, Long Que, Christopher Fred Keimel
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Patent number: 7394982Abstract: A current sensing system comprises a current transformer; a burden resistor connected across a secondary of the current transformer; a piezo-optic sensor coupled to the burden resistor, comprising a piezoelectric transducer, an optical fiber and a first optical filter with a first bandwidth; and an optical interrogator, configured for sending an originating signal to the first bandwidth optical filter and receiving a resulting data signal and a second optical filter with a second bandwidth for filtering the resulting data signal.Type: GrantFiled: June 17, 2004Date of Patent: July 1, 2008Assignee: General Electric CompanyInventors: John Michael Kern, Glen Peter Koste, Charles Erklin Seeley, Todd Ryan Tolliver
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Patent number: 7367945Abstract: An ultrasound system includes an ultrasound probe configured for sensing and transmitting ultrasound signals. The ultrasound system further includes an optical conduit configured for coupling a light source and an optical detector in an optical path. The optical conduit includes electro-optic modulators configured for modulating optical signals on the optical conduit with at least one of the electrical signals configured to generate corresponding optically modulated analog signals on the optical conduit. In one example, the electro-optic modulators comprise electro-optic polymer modulators.Type: GrantFiled: March 29, 2004Date of Patent: May 6, 2008Assignee: General Electric CompanyInventors: Samhita Dasgupta, Matthew Christian Nielsen, Min-Yi Shih, Robert John Filkins, Todd Ryan Tolliver, Bruno Hans Haider
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Patent number: 7270442Abstract: System and method for monitoring status of a visual signal lamp. The system includes at least one optical fiber comprising a first end and a second end. The first end is positioned proximate to the signal lamp and is oriented to capture a portion of light signal emitted by the signal lamp when the signal lamp is illuminated. The system also includes a photodetector positioned proximate to the second end of the optical fiber and configured to receive the portion of light signal. The system further includes a threshold detection circuitry connected to the photodetector and configured to detect a lighting parameter in relation to the signal lamp according to a predetermined criterion.Type: GrantFiled: September 30, 2004Date of Patent: September 18, 2007Assignee: General Electric CompanyInventors: David Michael Davenport, John Erik Hershey, Todd Ryan Tolliver
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Patent number: 7266269Abstract: A power harvesting module comprises at least one electromagnetic (EM) radiation intensity modulator configured to receive a first EM radiation from at least one source and at least one energy converter configured to at least partially convert the energy of the first EM radiation during modulation into electrical energy.Type: GrantFiled: December 16, 2004Date of Patent: September 4, 2007Assignee: General Electric CompanyInventors: Glen Peter Koste, Min-Yi Shih, Todd Ryan Tolliver
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Patent number: 7123015Abstract: A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of electromagnetic signals and a modulator coupled to the MR detector and configured to modulate optical signals with the electromagnetic signals to generate corresponding modulated optical signals. The MR system further comprises a resonant matching circuit configured for matching an impedance of the MR detector to an impedance of the modulator to achieve at least one of a voltage gain or a noise performance. An optical conduit coupled to the modulator is configured to transmit the modulated optical signals from within a shielded environment to outside the shielded environment. A signal detector coupled to the optical conduit is configured to convert the modulated optical signals to electrical signals.Type: GrantFiled: September 29, 2004Date of Patent: October 17, 2006Assignee: General Electric CompanyInventors: Glen Peter Koste, Ronald Dean Watkins, Richard Louis Frey, Matthew Christian Nielsen, Joseph Alfred Iannotti, Todd Ryan Tolliver