Patents by Inventor Pingshan Wang
Pingshan 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: 20210088568Abstract: A methodology for measuring the dielectric and magnetic properties of materials is provided. The method comprises a multi-section transmission line (TL) and multi-section fluidic channels. Two of the TL sections are incorporated with channel sections. The length-ratio of the two line-channel sections (LCS) is L?:L?. A network analyzer coupled to the TL can be configured to measure scattering parameters when the LCS have no material-under-measurement (MUM), one LCS has MUM, both LCSs have MUM. Then, the S-parameters are transformed to ABCD matrices. When L?:L? is 2:1, the propagation constant of the LCSs can be calculated with analytical formulas over the measured frequency range. When L?:L? is not 2:1, the propagation constant can be obtained with numerical root-searching algorithms. The properties of MUM can be extracted by use of models which relate the propagation constants with the given geometry and substrate of LCSs as well as the unknown MUM properties.Type: ApplicationFiled: September 19, 2019Publication date: March 25, 2021Applicant: Microhortone LLCInventor: Pingshan Wang
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Publication number: 20160320317Abstract: Systems and methods of determining characteristics of a material under test using highly sensitive, tunable RF sensors are disclosed. For instance, an RF sensor can include one or more interferometers having a reference branch and a test branch. The test branch includes a microstrip resonator and a coupled line filter. The RF sensor can further include a first port associated with each of the one or more interferometers configured to separate signals between a first transmission line and a second transmission line operable to provide a test signal to the resonator. and filter. The RF sensor can further include a signal analyzer coupled to the first port of the one or more interferometers operable to measure one or more scattering parameters. Wherein at least one of the one or more scattering parameters is indicative of one or more characteristics of a dielectric material disposed on the coupled line filter.Type: ApplicationFiled: April 29, 2016Publication date: November 3, 2016Inventors: Pingshan Wang, Yan Cui, Yongzhi Shao, Zhe Chen, Chao Shen
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Patent number: 9464994Abstract: Highly sensitive and tunable RF sensors that provide detection and analysis of single cells and particles are provided. The tunable RF sensors are configured as tunable interferometers, wherein cells or particles to be analyzed are passed through a channel, such as a microfluidic channel, across waveguides corresponding to reference and test branches of the interferometers. A network analyzer coupled to the interferometers can be configured to measure a plurality of scattering parameters, such as transmission scattering coefficients (S21) of the reference and test branches, to evaluate characteristics of cells passing through the channel. A plurality of tunable interferometers may be employed, each interferometer operating in different frequency bands such that information obtain from the plurality of interferometers may be combined to provide further information.Type: GrantFiled: July 29, 2014Date of Patent: October 11, 2016Assignee: Clemson UniversityInventors: Pingshan Wang, Yan Cui, Yuxi He, David Moline, Jiwei Sun
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Publication number: 20150065712Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.Type: ApplicationFiled: October 27, 2014Publication date: March 5, 2015Inventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang, Sinan Li
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Publication number: 20150035546Abstract: Disclosed are highly sensitive and tunable RF sensors that provide detection and analysis of single cells and particles. The tunable RF sensors are configured as tunable interferometers, wherein cells or particles to be analyzed are passed through a channel, such as a microfluidic channel, across waveguides corresponding to reference and test branches of the interferometers. A network analyzer coupled to the interferometers can be configured to measure a plurality of scattering parameters, such as transmission scattering coefficients (S21) of the reference and test branches, to evaluate characteristics of cells passing through the channel. A plurality of tunable interferometers may be employed, each interferometer operating in different frequency bands such that information obtain from the plurality of interferometers may be combined to provide further information.Type: ApplicationFiled: July 29, 2014Publication date: February 5, 2015Inventors: Pingshan Wang, Yan Cui, Yuxi He, David Moline, Jiwei Sun
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Patent number: 8895742Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.Type: GrantFiled: April 7, 2006Date of Patent: November 25, 2014Assignee: The University of AkronInventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang, Sinan Li
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Patent number: 8758633Abstract: Disclosed is a method for fabricating nanofluidic channels having a height of from about 1 nm to about 10 nm. Generally, the method includes formation of doped silicon parallel strips in a silicon substrate, formation of a native oxide layer on the substrate, and etching of the native oxide layer at one of the strips to form a channel of a depth of between about 1 nm and about 10 nm. The method also includes bonding a second wafer to the surface, the second wafer including through etched windows to provide probe contacts to two of the parallel strips during use. These parallel strips provide high-frequency transmission lines in the device that can provide broadband dielectric spectroscopy measurement within the nanochannels.Type: GrantFiled: July 19, 2010Date of Patent: June 24, 2014Assignee: Clemson UniversityInventors: Pingshan Wang, Chunrong Song
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Patent number: 8492509Abstract: Methods of preparation and application of sulfur functionalized polymers. More particularly, triazine, cyclotriphosphazene and/or phenyl derivatives can be polymerized to form sulfur functionalized polymers. The materials can be used for separating heavy metals from gas and liquid. The invention is a solid extractant or sorbent that upon exposure or contact with a gas and/or liquid can remove contaminates or impurities. The material can be employed as a solid agent to remove mercury and other heavy metal from combustion, calcinations and/or industrial gases. Also, the material can be applied as extracting agent for removing mercury and other heavy metal from a liquid phase. Further, the material can be used for removing/recovering hazardous elements from radioactive nuclear waste; or can be used for removing organic compounds from gases and liquids.Type: GrantFiled: May 12, 2010Date of Patent: July 23, 2013Assignee: Chemnano Materials, Ltd.Inventor: Pingshan Wang
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Patent number: 8398234Abstract: Devices including a coating layer formed of a transparent, conductive coating composition described. The coating layer may function as an active antifog coating for the prevention of water vapor condensation as droplets on a surface. The coating includes a conductive polymer and functionalized carbon nanostructures and may be crosslinked with a transition metal crosslinking agent. The composition may be coated on a surface used in a visualization application such as a face shield, glasses, safety glasses, goggles, oculars, etc., to prevent fogging on the surface.Type: GrantFiled: May 3, 2011Date of Patent: March 19, 2013Assignee: Kimberly-Clark Worldwide, inc.Inventors: Pingshan Wang, Brij P. Singh, Aladin B. Ferian, III, Timothy H. Morgan, Debra N. Welchel, Matrice B. Jackson
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Patent number: 8343450Abstract: Methods and compositions to extract radionuclides such as various actinides and lanthanides from organic and/or aqueous solutions by utilizing extractant functionalized carbon nanotubes are disclosed. More particularly, phosphorous-containing (such as phosphine oxides, phosphoric acids or phosphates) organic extractants and other predesigned extractants (such as crown ethers, calncrown derivatives, malonamide and diglycolamide derivatives, polyethylene glycol derivatives, cobalt dicarbollide derivatives, and N-donating heterocyclic ligands) can be covalently and/or non-covalently employed on the surfaces and/or ends (tips) of carbon nanotubes for the purpose of removal radionuclides such as various actinides and lanthanides from organic and/or aqueous solutions. Extractant functionalized carbon nanotubes can be used for extracting radioactive nuclides from nuclear waste or spent nuclear fuel, which are produced and/or reprocessed from the nuclear power generation or other nuclear application.Type: GrantFiled: October 8, 2008Date of Patent: January 1, 2013Assignee: Chemnano Materials, Ltd.Inventor: Pingshan Wang
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Publication number: 20120281179Abstract: Devices including a coating layer formed of a transparent, conductive coating composition described. The coating layer may function as an active antifog coating for the prevention of water vapor condensation as droplets on a surface. The coating includes a conductive polymer and functionalized carbon nanostructures and may be crosslinked with a transition metal crosslinking agent. The composition may be coated on a surface used in a visualization application such as a face shield, glasses, safety glasses, goggles, oculars, etc., to prevent fogging on the surface.Type: ApplicationFiled: May 3, 2011Publication date: November 8, 2012Applicant: KIMBERLY-CLARK WORLDWIDE, INC.Inventors: Pingshan Wang, Brij P. Singh, Aladin B. Ferian, III, Timothy H. Morgan, Debra N. Welchel, Matrice B. Jackson
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Patent number: 8149039Abstract: A picosecond pulse generator apparatus and methodology is disclosed. A pulse generator is provided by forming a transmission line and a switching element on a common semiconductor substrate or semiconductor chip. The transmission line and the switching element can be provided on the common CMOS semiconductor substrate using standard CMOS technology. A voltage is applied to the transmission line to charge the transmission line. An input pulse is applied to the switching device to trigger the switching device to cause the transmission line to discharge an output pulse across a load resistor. The pulse width of the output pulse depends in major part on the length of the transmission line. Additional components can be provided on the common semiconductor substrate or chip to shape the input pulse to the switching device to ensure a fast rise time.Type: GrantFiled: September 30, 2009Date of Patent: April 3, 2012Assignee: Clemson UniversityInventors: Pingshan Wang, Chaojiang Li
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Patent number: 8148438Abstract: In accordance with the present invention, there is provided a method for preparing a reversible, self-assembly of an imbedded hexameric metallomacrocycle within a macromolecular superstructure. The method occurs by an intramolecular mechanism in which a macromolecular skeleton possesses multiple ligands capable of reversible assembly-disassembly triggered by the presence of metal ions.Type: GrantFiled: November 23, 2005Date of Patent: April 3, 2012Assignee: The University of AkronInventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang
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Patent number: 7848222Abstract: A method for transmitting signals along an interconnect in a VLSI system comprising receivers is disclosed. The VLSI based systems operate in the high Giga hertz range. The signals are transmitted along the interconnect as a localized wave packet i.e. as a pulse. The interconnect may be either electrically linear or nonlinear in nature.Type: GrantFiled: April 26, 2006Date of Patent: December 7, 2010Assignee: Cornell Research Foundation, Inc.Inventors: Pingshan Wang, Edwin C. Kan
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Publication number: 20100288124Abstract: Methods of preparation and application of sulfur functionalized polymers. More particularly, triazine, cyclotriphosphazene and/or phenyl derivatives can be polymerized to form sulfur functionalized polymers. The materials can be used for separating heavy metals from gas and liquid. The invention is a solid extractant or sorbent that upon exposure or contact with a gas and/or liquid can remove contaminates or impurities. The material can be employed as a solid agent to remove mercury and other heavy metal from combustion, calcinations and/or industrial gases. Also, the material can be applied as extracting agent for removing mercury and other heavy metal from a liquid phase. Further, the material can be used for removing/recovering hazardous elements from radioactive nuclear waste; or can be used for removing organic compounds from gases and liquids.Type: ApplicationFiled: May 12, 2010Publication date: November 18, 2010Applicant: CHEMNANO MATERIALS, LTD.Inventor: Pingshan Wang
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Publication number: 20100286395Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.Type: ApplicationFiled: April 7, 2006Publication date: November 11, 2010Applicant: THE UNIVERSITY OF AKRONInventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang, Sinan Li
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Patent number: 7763684Abstract: The invention relates to novel phosphorus-containing dendrimers having a core, at least one generation and an external layer consisting, completely or partly, of identical or different units, the said units satisfying the following formula (I): in which R1 and R2, which may be identical or different, are alkyl, alkoxy or aryl groups. These dendrimers are used for extracting actinides and lanthanides from aqueous solutions containing them.Type: GrantFiled: February 26, 2004Date of Patent: July 27, 2010Assignee: Commissariat a l 'Energie AtomiqueInventors: Jean-François Dozol, Christian Schmidt, Pingshan Wang, Volker Bohmer
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Patent number: 7724005Abstract: Disclosed is an apparatus and methodology for characterization of small devices. On-chip subtraction of parasitic effects including coupling capacitive effects is provided by way of a rat-race employing a pair of gaps. A device or material being tested is positioned in a test position gap and an output signal is extracted from the rat-race at a position displaced along the rat-race between the test position gap and the other gap to provide subtractive cancellation of any parasitic effects associated with the rat-race and especially associated with the test position gap.Type: GrantFiled: July 24, 2008Date of Patent: May 25, 2010Inventors: Pingshan Wang, Chunrong Song
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Publication number: 20090171088Abstract: In accordance with the present invention, there is provided a method for preparing a reversible, self-assembly of an imbedded hexameric metallomacrocycle within a macromolecular superstructure. The method occurs by an intramolecular mechanism in which a macromolecular skeleton possesses multiple ligands capable of reversible assembly-disassembly triggered by the presence of metal ions.Type: ApplicationFiled: November 23, 2005Publication date: July 2, 2009Applicant: THE UNIVERSITY OF AKRONInventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang
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Publication number: 20090093664Abstract: Methods and compositions to extract radionuclides such as various actinides and lanthanides from organic and/or aqueous solutions by utilizing extractant functionalized carbon nanotubes are disclosed. More particularly, phosphorous-containing (such as phosphine oxides, phosphoric acids or phosphates) organic extractants and other predesigned extractants (such as crown ethers, calncrown derivatives, malonamide and diglycolamide derivatives, polyethylene glycol derivatives, cobalt dicarbollite derivatives, and N-donating heterocyclic ligands) can be covalently and/or non-covalently employed on the surfaces and/or ends (tips) of carbon nanotubes for the purpose of removal radionuclides such as various actinides and lanthanides from organic and/or aqueous solutions. Extractant functionalized carbon nanotubes can be used for extracting radioactive nuclides from nuclear waste or spent nuclear fuel, which are produced and/or reprocessed from the nuclear power generation or other nuclear application.Type: ApplicationFiled: October 8, 2008Publication date: April 9, 2009Applicant: CHEMNANO MATERIALS, LTD.Inventor: Pingshan Wang