Patents by Inventor Hsien-Hau Wang
Hsien-Hau Wang 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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Publication number: 20240110292Abstract: The present invention provides, in part, methods and processes for the production of lithium superoxide (LiO2) which is free of other lithium-oxygen compounds, as well as compositions and electrochemical cells comprising lithium superoxide (e.g., lithium superoxide that is free of other lithium-oxygen compounds).Type: ApplicationFiled: September 22, 2022Publication date: April 4, 2024Applicant: UCHICAGO ARGONNE, LLCInventors: Larry A. Curtiss, Hsien-Hau Wang, Khalil Amine, Samuel Plunkett
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Patent number: 11658291Abstract: An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.Type: GrantFiled: July 28, 2020Date of Patent: May 23, 2023Assignee: UChicago Argonne, LLCInventors: Hsien-Hau Wang, Ritesh Jagatramka, Samuel Plunkett, Larry A. Curtiss, Khalil Amine
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Publication number: 20220037646Abstract: An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.Type: ApplicationFiled: July 28, 2020Publication date: February 3, 2022Inventors: Hsien-Hau Wang, Ritesh Jagatramka, Samuel Plunkett, Larry A. Curtiss, Khalil Amine
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Patent number: 9139905Abstract: A method and system for providing a micro-channel plate detector. An anodized aluminum oxide membrane is provided and includes a plurality of nanopores which have an Al coating and a thin layer of an emissive oxide material responsive to incident radiation, thereby providing a plurality of radiation sensitive channels for the micro-channel plate detector.Type: GrantFiled: February 22, 2011Date of Patent: September 22, 2015Assignee: UChicago Argonne, LLCInventors: Jeffrey W. Elam, Seon W. Lee, Hsien-Hau Wang, Michael J. Pellin, Karen Byrum, Henry J. Frisch
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Publication number: 20110210259Abstract: A method and system for providing a micro-channel plate detector. An anodized aluminum oxide membrane is provided and includes a plurality of nanopores which have an Al coating and a thin layer of an emissive oxide material responsive to incident radiation, thereby providing a plurality of radiation sensitive channels for the micro-channel plate detector.Type: ApplicationFiled: February 22, 2011Publication date: September 1, 2011Inventors: Jeffrey W. Elam, Hsien-Hau Wang, Michael J. Pellin, Karen Byrum, Henry J. Frisch, Seon W. Lee
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Patent number: 7818993Abstract: Single-walled carbon nanotubes (SWNTs) are decorated with metal nanoparticles to form high-performance flexible hydrogen sensors. The special process to form the high-performance flexible hydrogen sensors can combine a dry transfer printing technique and modification of SWNTs with palladium (Pd) nanoparticles to provide high-performance hydrogen sensors with excellent mechanical flexibility on plastic substrates. Two approaches can be used to decorate the SWNTs. One is physical deposition, such as electron beam evaporation (EBE) and the other is electrochemical deposition which can selectively grow palladium nanoparticles on the surface of the SWNTs, resulting in significantly decreasing the use of palladium. Preferably, the Pd nanoparticles are deposed on the SWNTs in a discontinuous arrangement so that the Pd nanoparticles are spaced away from each other to form individual discontinuous Pd nanoparticles rather a continuous Pd film.Type: GrantFiled: September 27, 2007Date of Patent: October 26, 2010Assignee: UChicago Argonne, LLCInventors: Yugang Sun, Hsien-Hau Wang
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Patent number: 7820587Abstract: A hydrogen detector with a porous layer of alumina. Pores with average pore diameters in the range of from about 10 to about 200 nanometers (nms) and average pore depths in the range of from about 10 to about 1000 nms have Pd nanoparticles in the pores forming a film. Electrodes on the Pd film measure changes in electrical resistance of the Pd film in the presence of hydrogen. Pd may be in the form of nanotubes. The alumina is anodized for various times to form the nanowalls or pores and vary the pore depths.Type: GrantFiled: November 28, 2006Date of Patent: October 26, 2010Assignee: UChicago Argonne, LLCInventors: Hsien-Hau Wang, Jianjiang Lu, Shufang Yu
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Publication number: 20090084159Abstract: Single-walled carbon nanotubes (SWNTs) are decorated with metal nanoparticles to form high-performance flexible hydrogen sensors. The special process to form the high-performance flexible hydrogen sensors can combine a dry transfer printing technique and modification of SWNTs with palladium (Pd) nanoparticles to provide high-performance hydrogen sensors with excellent mechanical flexibility on plastic substrates. Two approaches can be used to decorate the SWNTs. One is physical deposition, such as electron beam evaporation (EBE) and the other is electrochemical deposition which can selectively grow palladium nanoparticles on the surface of the SWNTs, resulting in significantly decreasing the use of palladium. Preferably, the Pd nanoparticles are deposed on the SWNTs in a discontinuous arrangement so that the Pd nanoparticles are spaced away from each other to form individual discontinuous Pd nanoparticles rather a continuous Pd film.Type: ApplicationFiled: September 27, 2007Publication date: April 2, 2009Applicant: UChicago Argonne, LLCInventors: Yugang Sun, Hsien-Hau Wang
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Publication number: 20070151850Abstract: A hydrogen detector with a porous layer of alumina. Pores with average pore diameters in the range of from about 10 to about 200 nanometers (nms) and average pore depths in the range of from about 10 to about 1000 nms have Pd nanoparticles in the pores forming a film. Electrodes on the Pd film measure changes in electrical resistance of the Pd film in the presence of hydrogen. Pd may be in the form of nanotubes. The alumina is anodized for various times to form the nanowalls or pores and vary the pore depths.Type: ApplicationFiled: November 28, 2006Publication date: July 5, 2007Applicant: UChicago Argonne, LLCInventors: Hsien-Hau Wang, Jianjiang Lu, Shufang Yu
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Publication number: 20060289351Abstract: This invention provides ways to fabricate nanotubes and nanobead arrays by utilizing nanopores in anodic aluminum oxide (AAO) membranes. Nanotubes of bismuth and other low melting point metals with controlled diameters and lengths can be fabricated by sintering AAO coated with appropriate metals at temperatures above their melting points. Carbon nanotubes may also be readily formed by carbonizing a polymer on the interior walls of the nanopores in AAO membranes. Palladium nanobead arrays which can be used as ultrafast hydrogen sensors are fabricated by coating the flat surface of AAO membranes with controlled pore-wall ratios.Type: ApplicationFiled: June 24, 2005Publication date: December 28, 2006Inventors: Zhili Xiao, Yurong Han, Hsien-Hau Wang, Gerold Willing, Ulrich Welp, Wai-Kwong Kwok
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Patent number: 6869983Abstract: An in situ polymer microstructure formation method. The monomer mixture is polymerized in a solvent/precipitant through exposure to ionizing radiation in the absence any chemical mediators. If an exposure mask is employed to block out certain regions of the radiation cross section, then a patterned microstructure is formed. The polymerization mechanism is based on the so-called free-radical retrograde-precipitation polymerization process, in which polymerization occurs while the system is phase separating above the lower critical solution temperature. This method was extended to produce a crosslinked line grid-pattern of poly (N-isopropylacrylamide), which has been known to have thermoreversible properties.Type: GrantFiled: June 10, 2003Date of Patent: March 22, 2005Assignee: The University of ChicagoInventors: Gerard T. Caneba, Vijaya Raghavan Tirumala, Derrick C. Mancini, Hsien-Hau Wang
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Publication number: 20050043428Abstract: An in situ polymer microstructure formation method. The monomer mixture is polymerized in a solvent/precipitant through exposure to ionizing radiation in the absence any chemical mediators. If an exposure mask is employed to block out certain regions of the radiation cross section, then a patterned microstructure is formed. The polymerization mechanism is based on the so-called free-radical retrograde-precipitation polymerization process, in which polymerization occurs while the system is phase separating above the lower critical solution temperature. This method was extended to produce a crosslinked line grid-pattern of poly (N-isopropylacrylamide), which has been known to have thermoreversible properties.Type: ApplicationFiled: June 10, 2003Publication date: February 24, 2005Inventors: Gerard Caneba, Vijaya Tirumala, Derrick Mancini, Hsien-Hau Wang
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Patent number: 4675415Abstract: A new class of organic superconductors having the formula (ET).sub.2 MX.sub.2 wherein ET represents bis(ethylenedithio)-tetrathiafulvalene, M is a metal such as Au, Ag, In, Tl, Rb, Pd and the like and X is a halide. The superconductor (ET).sub.2 AuI.sub.2 exhibits a transition temperature of 5 K. which is high for organic superconductors.Type: GrantFiled: May 29, 1985Date of Patent: June 23, 1987Assignee: The United States of America as represented by the United States Department of EnergyInventors: Jack M. Williams, Hsien-Hau Wang, Mark A. Beno
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Patent number: 4632776Abstract: A new class of organic superconductors having the formula (ET).sub.2 MX.sub.2 wherein ET represents bis(ethylenedithio)-tetrathiafulvalene, M is a metal such as Au, Ag, In, Tl, Rb, Pd and the like and X is a halide. The superconductor (ET).sub.2 AuI.sub.2 exhibits a transition temperature of 5 K which is high for organic superconductors.Type: GrantFiled: April 18, 1986Date of Patent: December 30, 1986Assignee: The United States of America as represented by the United States Department of EnergyInventors: Jack M. Williams, Hsien-Hau Wang, Mark A. Beno