Patents Assigned to The Government of the United States of America as represented by the Secretary of the Navy
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Patent number: 11622270Abstract: Physical-layer authentication based on the channel response over a wireless medium are described. In a first authentication scheme, a count is kept of how many significant multipath taps remain empty or occupied from one channel estimate to the next for authentication purposes. In a second authentication scheme, which does not require an alternative means of initial authentication, the presence of a multipath component based on a reported position of a transmitter and the side knowledge of planar reflectors in the environment may be leveraged for authentication purposes.Type: GrantFiled: May 20, 2021Date of Patent: April 4, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Scott Frederick Lord, John David-Dickson Roth, Murali Tummala, John Colin McEachen
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Patent number: 11617800Abstract: A nanoparticle (NP)-peptide conjugate provides efficient steric hindrance/blockage of cellular membrane potassium (K+) channels to mediate depolarization of cellular membrane potential.Type: GrantFiled: September 10, 2020Date of Patent: April 4, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: James B. Delehanty, Megan Muroski, Eunkeu Oh, Jeffrey R. Deschamps
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Patent number: 11618821Abstract: This disclosure concerns electrically conducting poly(pyrazoles). The concept of oligomerizing and polymerizing substituted aminopyrazole derivatives combined with a monomer activation procedure involving base-mediated conversion of the protonated pyrazole ring nitrogen to amine salt was developed. This disclosure concerns the specific chemistries needed for the synthesis of a pyrazole monomer used in the polymer synthesis. The procedure used for blending the novel polypyrazoles with other compounds needed for construction of solar cells for testing was developed. This disclosure concerns the concept of using these types of heteroatom-rich, electron-deficient oligomers or polymers as n-dopable or p-dopable electron acceptors in photovoltaic cells. This disclosure concerns synthesizing the starting monomer compounds and polypyrazoles.Type: GrantFiled: November 18, 2020Date of Patent: April 4, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Brett D. Martin, Ian D. Giles, Jawad Naciri, Paul T. Charles, Scott A. Trammell, Jeffrey R. Deschamps, Jeffrey C. Depriest
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Patent number: 11619583Abstract: Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.Type: GrantFiled: August 20, 2021Date of Patent: April 4, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jerry R. Meyer, Igor Vurgaftman, Chadwick Lawrence Canedy, William W. Bewley, Chul Soo Kim, Charles D. Merritt, Michael V. Warren, R. Joseph Weiblen, Mijin Kim
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Patent number: 11621146Abstract: A method for non-invasively imaging plasma parameters has been invented. Crossed dipole pairs are used to differentiate changes in the measured complex self- and mutual impedances due to plasma density and magnetic field. Measurements of the complex self-impedance and mutual impedance between pairs of antennas over a wide range of frequencies provide spatial information to create an image of the plasma density and magnetic field. The spectral information is acquired simultaneously using a Gaussian monopulse as the driver signal.Type: GrantFiled: October 14, 2020Date of Patent: April 4, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Erik Tejero, George Gatling, William Amatucci
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Patent number: 11616247Abstract: A fuel cell membrane electrode assembly having: a proton exchange membrane, an anode catalyst coating on one side of the membrane, and a cathode catalyst coating on the other side of the membrane. The cathode catalyst coating has at least two carbon catalyst layers, with a low porosity layer adjacent to a high porosity layer. The high porosity layers have a volume fraction that is higher than the volume fraction of the low porosity layers.Type: GrantFiled: June 16, 2021Date of Patent: March 28, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Yannick Garsany, Robert Atkinson, III, Benjamin Gould
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Patent number: 11608409Abstract: An interpenetrating network (IPN) polymer membrane material includes a soft polyurethane interspersed with a crosslinked conducting polymer. The material can be reversibly “switched” between its oxidized and reduced states by the application of a small voltage, ˜1 to 4 volts, thus modulating its diffusivity.Type: GrantFiled: March 24, 2022Date of Patent: March 21, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Brett D. Martin, Jawad Naciri, Banahalli R. Ratna
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Patent number: 11609479Abstract: A liquid crystal (LC) beam steerer includes a waveguide apparatus with a waveguide having a high-index core in contact with a variable-index liquid crystal (LC) cladding, wherein a voltage applied to the LC cladding is effective to steer a beam of light passing through the high-index core. Measuring the bulk birefringence and/or the capacitance characteristics of the LC can facilitate beam steering.Type: GrantFiled: September 29, 2020Date of Patent: March 21, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jakub Kolacz, Henry G. Gotjen, Christopher M. Spillmann, Jawad Naciri, Jason D. Myers, Jesse A. Frantz, Robel Y. Bekele
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Patent number: 11609084Abstract: A system for mechanical testing a specimen includes a 3D printed mechanical testing fixture; a linear actuator having an axis of movement; a controller configured to control the linear actuator; two cameras; a data-acquisition system configured to acquire data from the linear actuator, the controller, and the two cameras; and the specimen. The specimen is marked in two locations with tracking markers to provide indication to the data acquisition system via at least one camera of movement and change in length of the specimen. The fixture includes force-sensing beams extending perpendicular to the axis of force.Type: GrantFiled: February 24, 2021Date of Patent: March 21, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Wonmo Kang, Christopher Rudolf
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Patent number: 11608360Abstract: Peptides that form adhesive bonds, even in aqueous and/or saline environments, are disclosed. When aggregated, the peptides may be used in methods for producing hydrogels and/or adhesive materials. Synthetic peptide analogs are provided that are designed based on protein sequences found in barnacle adhesive, and may optionally be augmented with chemistry from other organisms that secrete proteins that adhere to substrates. The peptides may be used, for example, in biomedical and aqueous applications. Methods of using the aggregated peptides as adhesives are also provided.Type: GrantFiled: February 1, 2021Date of Patent: March 21, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Christopher R. So, Kathryn J. Wahl
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Publication number: 20230081740Abstract: This disclosure teaches methods for making high-temperature superconducting striated tape combinations and the product high-temperature superconducting striated tape combinations. This disclosure describes an efficient and scalable method for aligning and bonding two superimposed high-temperature superconducting (HTS) filamentary tapes to form a single integrated tape structure. This invention aligns a bottom and top HTS tape with a thin intervening insulator layer with microscopic precision, and electrically connects the two sets of tape filaments with each other. The insulating layer also reinforces adhesion of the top and bottom tapes, mitigating mechanical stress at the electrical connections. The ability of this method to precisely align separate tapes to form a single tape structure makes it compatible with a reel-to-reel production process.Type: ApplicationFiled: October 27, 2022Publication date: March 16, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Joseph C. Prestigiacomo, Raymond C.Y. Auyeung, Michael S. Osofsky
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Patent number: 11605410Abstract: A metamagnetic tunneling-based spin valve device for multistate magnetic memory comprising an electronic memory logic element with four stable resistance states. A metamagnetic tunneling-based spin valve device for multistate magnetic memory comprising a layer of a metamagnetic material, a layer of a nonmagnetic material on the layer of a metamagnetic material, and a layer of a ferromagnetic material on the layer of a nonmagnetic material. A method of making a metamagnetic tunneling-based spin valve device for multistate magnetic memory.Type: GrantFiled: June 29, 2021Date of Patent: March 14, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Olaf M. J. van 't Erve, Steven P. Bennett, Adam L. Friedman
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Patent number: 11604316Abstract: An apparatus including an optical resonator, and a method of using same. The optical limiter includes an optically absorbent material. The optical resonator supports a plurality of resonant transmission peaks at resonant frequencies defined by the cavity length. The optically absorbent material exhibits a saturable absorption response at a fundamental absorption peak located spectrally at a fundamental absorption peak frequency of the plurality of resonant transmission peaks. The optically absorbent material includes an absorptivity sufficient for strong cavity coupling, such that the fundamental absorption peak splits into a first upper vibration polariton transmission peak and a second lower polariton transmission peak separated by a Rabi splitting. The Rabi splitting is proportional to a square root of the absorptivity. The absorptivity varies with optical excitation of the optically absorbent material.Type: GrantFiled: September 9, 2020Date of Patent: March 14, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Blake Simpkins, Adam Dunkelberger, Jeffrey C. Owrutsky, Kenan P. Fears, Jeremy J. Pietron
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Patent number: 11602158Abstract: Nano-structures of Aluminum Nitride and a method of producing nano-structures of Aluminum Nitride from nut shells comprising milling agricultural nuts into a fine nut powder, milling nanocrystalline Al2O3 into a powder, mixing, pressing the fine nut powder and the powder of nanocrystalline Al2O3, heating the pellet, maintaining the temperature of the pellet at about 1400° C., cooling the pellet, eliminating the residual carbon, and forming nano-structures of AlN. An Aluminum Nitride (AlN) product made from the steps of preparing powders of agricultural nuts using ball milling, preparing powders of nanocrystalline Al2O3, mixing the powders of agricultural nuts and the powders of nanocrystalline Al2O3 forming a homogenous sample powder of agricultural nuts and Al2O3, pressurizing, pyrolyzing the disk, and reacting the disk and the nitrogen atmosphere and forming AlN.Type: GrantFiled: October 27, 2020Date of Patent: March 14, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Syed B. Qadri, Bhakta B. Rath, Edward P. Gorzkowski, III
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Publication number: 20230073983Abstract: An apparatus having: a polymer electrolyte membrane fuel cell stack capable of generating 1-6 kW and a compressor capable of delivering at least 10 g/s of air at 12 bar. The compressor is coupled to an air inlet of the fuel cell stack.Type: ApplicationFiled: October 27, 2022Publication date: March 9, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventor: Benjamin D. Gould
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Patent number: 11598868Abstract: A microwave single pixel imager apparatus and method of using same. Sampling a targeted scene includes the following. A plurality of modulated antenna patterns is generated using a reflectarray. A plurality of antenna temperatures respectively corresponding to the plurality of modulated antenna patterns is measured. A retrieved scene corresponding to the sampled targeted scene is generated. Generating a retrieved scene corresponding to the sampled targeted scene includes the following. The plurality of modulated antenna patterns and the corresponding plurality of antenna temperatures are fed into a compressive sensing imaging algorithm.Type: GrantFiled: June 25, 2020Date of Patent: March 7, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Justin P. Bobak, Hatim F. Alqadah, Scott M. Rudolph, Michael W. Nurnberger
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Patent number: 11600762Abstract: This disclosure teaches methods for making high-temperature superconducting striated tape combinations and the product high-temperature superconducting striated tape combinations. This disclosure describes an efficient and scalable method for aligning and bonding two superimposed high-temperature superconducting (HTS) filamentary tapes to form a single integrated tape structure. This invention aligns a bottom and top HTS tape with a thin intervening insulator layer with microscopic precision, and electrically connects the two sets of tape filaments with each other. The insulating layer also reinforces adhesion of the top and bottom tapes, mitigating mechanical stress at the electrical connections. The ability of this method to precisely align separate tapes to form a single tape structure makes it compatible with a reel-to-reel production process.Type: GrantFiled: December 12, 2018Date of Patent: March 7, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Joseph C. Prestigiacomo, Raymond C. Y. Auyeung, Michael S. Osofsky
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Patent number: 11596050Abstract: Method and apparatus for producing a cooled atom beam suitable for use applications requiring cold atoms. A two-stage cooling process is employed in which the atoms in the atom beam are cooled in two, spatially separated regions of a cooling apparatus, wherein the atoms are first cooled in two dimensions by two counterpropagating laser beams under a magnetic field and then are cooled in three dimensions by means of an optical molasses, where the power, frequency, and magnetic fields are tuned to obtain a continuous beam of three-dimensionally cooled atoms having a controllable velocity distribution, very low decoherence, and low background atomic gas loss.Type: GrantFiled: January 28, 2021Date of Patent: February 28, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Adam Black, Mark Bashkansky, Charles Fancher, Jonathan Kwolek
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Patent number: 11595057Abstract: Systems and methods are provided for reducing error in data compression and decompression when data is transmitted over low bandwidth communication links, such as satellite links. Embodiments of the present disclosure provide systems and methods for variable block size compression for gridded data, efficiently storing null values in gridded data, and eliminating growth of error in compressed time series data.Type: GrantFiled: July 12, 2022Date of Patent: February 28, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventor: John T. Sample
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Patent number: 11596049Abstract: Methods and apparatuses for emitting electrons from a hollow cathode are provided. The cathode includes a plasma holding region configured to hold a plasma, a gas supply source configured to supply gas to the plasma holding region, and an orifice plate disposed on a periphery of the plasma holding region. The orifice plate comprises a plurality of openings constructed to receive electrons from the plasma. The plurality of openings decouple gas conductance and electrical conductance across the orifice plate. The diameters of the plurality of openings are within a range of 20%-60%, inclusive, of a diameter of a circular opening with an area equal to a sum of the areas of the plurality of openings.Type: GrantFiled: February 23, 2021Date of Patent: February 28, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventor: Michael McDonald
