Patents by Inventor John E. McGeehan
John E. McGeehan 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: 12621077Abstract: A reusable battery-operated electromagnetic pulse (EMP) generator system comprising a pyroelectric element that accumulates high-voltage charge, immersed in a dielectric bath. A heating element heats the dielectric bath and the pyroelectric element, while a temperature sensor monitors their temperatures. The components are housed within a thermal chamber that provides insulation. A switched pulse actuator controls the rapid discharge of the accumulated charge from the pyroelectric element. The system includes a pulse shaping subsystem, a power supply unit, and a broadband radiating element such as an ultrawideband antenna for emitting the EMP. The pyroelectric element is heated and cooled to control accumulation of high voltage charge, which is discharged as an electrical pulse that is shaped and radiated as EMP.Type: GrantFiled: June 12, 2024Date of Patent: May 5, 2026Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Renyuan Wang, John E. McGeehan, Sean Sengele, Amrita V. Masurkar, Timothy M. Dresser, Caprice Gray Haley, Alexander D. Johnson
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Publication number: 20250385746Abstract: A reusable battery-operated electromagnetic pulse (EMP) generator system comprising a pyroelectric element that accumulates high-voltage charge, immersed in a dielectric bath. A heating element heats the dielectric bath and the pyroelectric element, while a temperature sensor monitors their temperatures. The components are housed within a thermal chamber that provides insulation. A switched pulse actuator controls the rapid discharge of the accumulated charge from the pyroelectric element. The system includes a pulse shaping subsystem, a power supply unit, and a broadband radiating element such as an ultrawideband antenna for emitting the EMP. The pyroelectric element is heated and cooled to control accumulation of high voltage charge, which is discharged as an electrical pulse that is shaped and radiated as EMP.Type: ApplicationFiled: June 12, 2024Publication date: December 18, 2025Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.Inventors: Renyuan Wang, John E. McGeehan, Sean Sengele, Amrita V. Masurkar, Timothy M. Dresser, Caprice Gray Haley, Alexander D. Johnson
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Publication number: 20240207914Abstract: Disclosed herein are PET hydrolase enzymes, and their nucleic acid and amino acid sequences. A number of candidates have been identified with detectable, quantifiable activity on PET and these enzymes possess desirable traits that are leveraged in the design and engineering of enzyme formulations targeted to degrade specific polymers. These enzymes have measurable PET degrading activity and, in an embodiment, may be active polyester polyurethanes.Type: ApplicationFiled: April 20, 2022Publication date: June 27, 2024Inventors: Erika Marie ERICKSON, Gregg Tyler BECKHAM, Japheth Emi GADO, John E. MCGEEHAN, Christina Marie PAYNE
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Publication number: 20230151340Abstract: The present disclosure relates to a non-naturally occurring enzyme that includes a first polypeptide that catalyzes the hydrolysis of a polyester to produce mono-(2-hydroxyethyl) terephthalate (MHET), a second polypeptide that catalyzes the cleavage of MHET to produce at least one of terephthalic acid or ethylene glycol, and a third polypeptide that links the first polypeptide with the second polypeptide.Type: ApplicationFiled: May 10, 2021Publication date: May 18, 2023Inventors: Gregg Tyler BECKHAM, Erika Marie ERICKSON, John E. MCGEEHAN
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Patent number: 11243418Abstract: An RF frequency tuning-in-silicon photoconductive-switch-based high power microwave system including a cradle; a transmission line proximate the cradle; a photosensitive silicon material switch component also proximate the cradle; a laser light source having a varied illumination incidence location on the photosensitive material; and a laser alignment component providing the location of the illumination incidence location on the photosensitive material; whereby the inductance of the switch varies as a function of the incidence location of the illumination on the photosensitive material.Type: GrantFiled: August 16, 2019Date of Patent: February 8, 2022Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventor: John E. McGeehan
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Patent number: 11208642Abstract: Disclosed herein are compositions of non-naturally occurring enzymes to enable microbial syringol utilization with GcoAB.Type: GrantFiled: November 14, 2019Date of Patent: December 28, 2021Assignees: Alliance for Sustainable Energy, LLC, Montana State University, University of PortsmouthInventors: Gregg Tyler Beckham, Jennifer DuBois, Melodie M. Machovina, Simon James Bradshaw Mallinson, John E. McGeehan, Christopher W. Johnson, Alexander William Meyers
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Publication number: 20210048694Abstract: An RF frequency tuning-in-silicon photoconductive-switch-based high power microwave system including a cradle; a transmission line proximate the cradle; a photosensitive silicon material switch component also proximate the cradle; a laser light source having a varied illumination incidence location on the photosensitive material; and a laser alignment component providing the location of the illumination incidence location on the photosensitive material; whereby the inductance of the switch varies as a function of the incidence location of the illumination on the photosensitive material.Type: ApplicationFiled: August 16, 2019Publication date: February 18, 2021Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.Inventor: John E. McGeehan
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Publication number: 20200199562Abstract: Disclosed herein are compositions of non-naturally occurring enzymes to enable microbial syringol utilization with GcoAB.Type: ApplicationFiled: November 14, 2019Publication date: June 25, 2020Inventors: Gregg Tyler BECKHAM, Jennifer DuBOIS, Melodie M. MACHOVINA, Simon James Bradshaw MALLINSON, John E. McGEEHAN, Christopher W. JOHNSON, Alexander William MEYERS
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Patent number: 10158172Abstract: A steerable high-power microwave beam array includes an optical sub-system comprising a laser and an optical time delay unit and a parallel set of RF time delay units. The optical system and/or the RF delay subsystem are utilized to precisely delay the pulses from the microwave antenna elements to provide steerable beam forming.Type: GrantFiled: October 13, 2015Date of Patent: December 18, 2018Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: John E. McGeehan, Yannick C. Morel, Alexander B. Kozyrev, Simon Y. London, Clint J. Novotny, Somnath Sengupta, Yeuan-Ming Sheu, Mark T. Walter
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Publication number: 20160126628Abstract: A steerable high-power microwave beam array includes an optical sub-system comprising a laser and an optical time delay unit and a parallel set of RF time delay units. The optical system and/or the RF delay subsystem are utilized to precisely delay the pulses from the microwave antenna elements to provide steerable beam forming.Type: ApplicationFiled: October 13, 2015Publication date: May 5, 2016Inventors: John E. McGeehan, Yannick C. Morel, Alexander B. Kozyrev, Simon Y. London, Clint J. Novotny, Somnath Sengupta, Yeuan-Ming Sheu, Mark T. Walter
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Publication number: 20140035695Abstract: A Multi-Cycle Digital High Power Microwave (MCD-HPM) source includes a microwave transmission line (MTL) to which a plurality electrically charged thin film transmission lines (TFTL's) are connected by switches. The switches are activated in sequence to generate a square wave at a microwave output frequency. The activation signal is controlled by a free space time delay, which can vary the timing and/or routing of the activation signal by modifying at least one free space element, thereby adjusting the switch activation timing and varying the output frequency. In embodiments, the switches are photo-conducting switches, the activation signal is a laser beam, and the switch timing is varied by reorienting and/or repositioning mirrors and/or other elements in the free space time delay. The elements can be manually adjusted, or mounted on motorized stages and automatically controlled. Optical amplifiers can be included to compensate for losses in the time delay elements.Type: ApplicationFiled: April 20, 2012Publication date: February 6, 2014Applicant: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Yannick C. Morel, John E. McGeehan, Clint J. Novotny, Simon Y. London
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Patent number: 7369766Abstract: Systems and techniques to optically boost a router. In general, in one implementation, the technique includes: receiving an optical signal defining a packet of data, initiating electronic routing of the optical packet, and initiating optical routing of the optical packet. The optical routing involves determining forwarding information based on a routing field in the optical packet, and if optical forwarding is available, terminating the electronic routing of the packet before completion of the electronic routing, and forwarding the optical signal, which defines the packet, based on the determined forwarding information.Type: GrantFiled: November 15, 2002Date of Patent: May 6, 2008Assignee: University of Southern CaliforniaInventors: Joseph A. Bannister, Joseph D. Touch, Purushotham Kamath, Aatash Patel, John E. McGeehan, Alan E. Willner