Patents by Inventor Junhua Wei

Junhua Wei 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).

  • Publication number: 20220220267
    Abstract: A method of manufacturing includes producing a powder resin comprising a polymer precursor and a thermal initiator, packing a fiber structure with the powder resin, resulting in a resin-packed structure, and heating the resin-packed structure to a curing temperature high enough to melt and cure the resin-packed structure to form a final structure.
    Type: Application
    Filed: January 12, 2021
    Publication date: July 14, 2022
    Inventors: JUNHUA WEI, GABRIEL IFTIME, MICHAEL BENEDICT, MAHATI CHINTAPALLI
  • Patent number: 11207640
    Abstract: An electrochemical device suited to modifying a carbon dioxide concentration in an interior space includes a cathode chamber with an inlet which receives a feed gas containing carbon dioxide. A reduction catalyst layer in the cathode chamber reduces carbon dioxide in the gas to form an ionic carrier species. An anode chamber with an outlet outputs a gas comprising carbon dioxide. A solid electrolyte membrane spaces the anode chamber from the cathode chamber and transports the ionic carrier species between the cathode chamber and the anode chamber. The membrane includes an ionic liquid. An oxidation catalyst layer in the anode chamber oxidizes the ionic carrier species to form carbon dioxide. A voltage source provides a voltage difference across the membrane.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: December 28, 2021
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Divyaraj Desai, Jessica Louis Baker Rivest, Gabriel Iftime, Vedhasri Vedharathinam, Mahati Chintapalli, Junhua Wei, Sean Emerson Doris
  • Publication number: 20210283837
    Abstract: Additive manufacturing compositions and methods for fabricating a conductive article with the same are provided. The additive manufacturing composition may include a 3D printable material and a metal precursor disposed in the 3D printable material. The metal precursor may include a metal salt, a metal particle, or combinations thereof. The method may include forming a first layer of the article on a substrate, where the first layer includes the additive manufacturing composition, forming a second layer of the article adjacent the first layer, and binding the first layer with the second layer to fabricate the article. The method may also include plating a metal on at least a portion of the article to fabricate the conductive article.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 16, 2021
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Junhua Wei, Anne Plochowietz, Kent Evans, Sean E. Doris
  • Publication number: 20210284830
    Abstract: Additive manufacturing compositions and methods for fabricating a conductive article with the same are provided. The additive manufacturing composition may include a 3D printable material, a plurality of porogens disposed in the 3D printable material, and a metal precursor disposed in the 3D printable material. The metal precursor may include a metal salt, a metal particle, or combinations thereof. The method may include forming a first layer of the article on a substrate, where the first layer includes the additive manufacturing composition, forming a second layer of the article adjacent the first layer, and binding the first layer with the second layer to fabricate the article. The method may also include plating a metal on the article to fabricate the conductive article.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 16, 2021
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Sean Emerson Doris, Anne Plochowietz, Kent Evans, Warren Jackson, Junhua Wei
  • Patent number: 11105038
    Abstract: A composition of matter has a fiber structure impregnated with a polymer, the polymer having dispersed functionalized particles chemically bonded to the polymer, wherein the functionalized particles contain one of either groups same as a precursor of the polymer, or groups reactive with a precursor. A composition of matter has a fiber structure impregnated with cured epoxy resin having dispersed functionalized particles chemically bonded to the cured epoxy, wherein the functionalized particles contain one of either groups same as the epoxy resin, or groups reactive with the epoxy resin.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 31, 2021
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Junhua Wei, Gabriel Iftime, Jessica Louis Baker Rivest, Sean Roark Garner
  • Publication number: 20210260793
    Abstract: A method of recycling fiber reinforced polymers includes grinding used fiber reinforced polymers material to produce ground particles, functionalizing the ground particles to produce functionalized particles, dispersing the functionalized particles into a base resin, dispensing the resin with functionalized particles into one or more layers of continuous fiber mats, molding the resin with functionalized particles and the continuous fiber mats into a form of a desired part, and curing the form to produce the part. The used fiber reinforced polymer materials may be carbon fiber reinforced polymers or glass fiber reinforced polymer materials.
    Type: Application
    Filed: October 27, 2020
    Publication date: August 26, 2021
    Inventors: Gabriel Iftime, Junhua Wei, Jerome Unidad, Rahul Pandey, Sean Roark Garner
  • Publication number: 20210253429
    Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 19, 2021
    Applicants: Palo Alto Research Center Incorporated, United States of America as Represented by the Administrator of the NASA, Bay Systems Consulting, Inc.
    Inventors: Gabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
  • Patent number: 11072531
    Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 27, 2021
    Assignees: PALO ALTO RESEARCH CENTER INCORPORATED, UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NASA, BAY SYSTEMS CONSULTING, INC.
    Inventors: Gabriel Iftime, Beomseok Kim, Clinton Smith, Eric Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
  • Publication number: 20210079193
    Abstract: A method of producing functionalized graphene oxide includes mixing graphene oxide with a reactive monomer containing at least one epoxy functional group and a secondary functional group that is selected from vinyl, acrylate, methacrylate, and epoxy to form a mixture, adding an activation agent, heating and stirring the mixture, cooling the mixture, separating the particles from the mixture, and drying the particles to produce functionalized graphene oxide.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: JUNHUA WEI, GABRIEL IFTIME, DAVID MATHEW JOHNSON, JESSICA LOUIS BAKER RIVEST
  • Patent number: 10882972
    Abstract: A method of manufacturing a cured polymer resin using functionalized graphene oxide, includes mixing functionalized graphene oxide with a resin precursor and an optional solvent to produce a functionalized graphene solution wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the resin solution and mixing to produce a resin solution, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 5, 2021
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Junhua Wei, Gabriel Iftime, David Mathew Johnson, Jessica Louis Baker Rivest
  • Publication number: 20200262755
    Abstract: A composition of matter has cement particles and resin structures having: a first functional group bonded directly to a surface of each cement particle; and a second functional group that bonds to calcium silicate hydrate upon hydration, wherein the second functional group is bondable with second functional groups of others of the cement particles to form a polymer network; and a backbone that connects the first functional group with the second functional group. A method of forming cement particles includes mixing cement particles with reactive molecules, the reactive molecules having a first functional group bonded directly to a surface of each cement particle, a second functional group that is bondable to calcium silicate hydrate upon hydration, wherein the second functional group is bondable with second function groups of others of the cement particles to form a polymer network, and a backbone that connects the first functional group with the second functional group.
    Type: Application
    Filed: December 11, 2019
    Publication date: August 20, 2020
    Inventors: Gabriel Iftime, Junhua Wei, Divyaraj Desai, Jessica Louis Baker Rivest
  • Publication number: 20200199811
    Abstract: A composition of matter has a fiber structure impregnated with a polymer, the polymer having dispersed functionalized particles chemically bonded to the polymer, wherein the functionalized particles contain one of either groups same as a precursor of the polymer, or groups reactive with a precursor. A composition of matter has a fiber structure impregnated with cured epoxy resin having dispersed functionalized particles chemically bonded to the cured epoxy, wherein the functionalized particles contain one of either groups same as the epoxy resin, or groups reactive with the epoxy resin.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: JUNHUA WEI, GABRIEL IFTIME, JESSICA LOUIS BAKER RIVEST, SEAN ROARK GARNER
  • Publication number: 20200198975
    Abstract: A composition of matter includes a functionalized graphene derivative having at least one functional group bonded through a chemical linker to the graphene surface. A method includes reacting fluorographite with at least one reactant, wherein at least one reactant is one of either a di-functional or a multifunctional reactant, to produce a fluorographite derivative.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 25, 2020
    Inventors: EUGENE SHIN MING BEH, GABRIEL IFTIME, JUNHUA WEI, RAHUL PANDEY, JESSICA LOUIS BAKER RIVEST
  • Publication number: 20200190458
    Abstract: A three dimensional biological scaffold structure that includes a biologically compatible material that forms walls of multiple pores. The pores have a range of pore sizes including a pore size of less than 50 ?m and a pore size of greater than 100 ?m and also including pores having one or more intermediate pore sizes between 50 ?m and 100 ?m. The pores occupy more than 50% of a volume of the scaffold structure.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 18, 2020
    Inventors: Anne Plachowietz, Junhua Wei, Gabriel Iftime, Joerg Martini
  • Publication number: 20200189177
    Abstract: A method of forming a porous structure involves mixing a solvent with a curable material which disperses in the solvent such that the mixture has greater than 50% solvent content. The mixture is deposited on a substrate and viscosity of the mixture is increased. The curable material in the mixture is cured while a shape of the curable material is maintained by the solvent. After curing, the solvent is removed from the structure.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 18, 2020
    Inventors: Junhua Wei, Gabriel Iftime, Jessica Louis Baker Rivest, Anne Plochowietz
  • Publication number: 20200024494
    Abstract: A pair of bonded substrates having a first substrate of a first material, a second substrate of the first material, and an adhesive bonding the first substrate to the second substrate, wherein the adhesive has chemically linked compatibilizing particles compatible with the first and second substrates. A composition of matter has an adhesive having a chemically linked particle network forming a bond between a first substrate and a second substrate, wherein compatibilizing particles in the particle network are compatible with the first and second substrates. A method of joining two structures of identical materials includes preparing first and second structures to expose bare material, applying an adhesive to the bare material on the first and second structures, the adhesive containing compatibilizing particles compatible with the material and the preparing allows interaction between the material and the compatibilizing particles, and curing the adhesive.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: GABRIEL IFTIME, JESSICA LOUIS BAKER RIVEST, DAVID MATHEW JOHNSON, JUNHUA WEI, EUGENE SHIN MING BEH
  • Publication number: 20190194417
    Abstract: A method of manufacturing a cured polymer resin using functionalized graphene oxide, includes mixing functionalized graphene oxide with a resin precursor and an optional solvent to produce a functionalized graphene solution wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the resin solution and mixing to produce a resin solution, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 27, 2019
    Inventors: JUNHUA WEI, GABRIEL IFTIME, DAVID MATHEW JOHNSON, JESSICA LOUIS BAKER RIVEST
  • Publication number: 20190194019
    Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 27, 2019
    Inventors: Gabriel Iftime, Beomseok Kim, Clinton Smith, Eric Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
  • Publication number: 20180257027
    Abstract: An electrochemical device suited to modifying a carbon dioxide concentration in an interior space includes a cathode chamber with an inlet which receives a feed gas containing carbon dioxide. A reduction catalyst layer in the cathode chamber reduces carbon dioxide in the gas to form an ionic carrier species. An anode chamber with an outlet outputs a gas comprising carbon dioxide. A solid electrolyte membrane spaces the anode chamber from the cathode chamber and transports the ionic carrier species between the cathode chamber and the anode chamber. The membrane includes an ionic liquid. An oxidation catalyst layer in the anode chamber oxidizes the ionic carrier species to form carbon dioxide. A voltage source provides a voltage difference across the membrane.
    Type: Application
    Filed: January 26, 2018
    Publication date: September 13, 2018
    Applicant: Palo Alto Research Center Incorporated
    Inventors: Divyaraj Desai, Jessica Louis Baker Rivest, Gabriel Iftime, Vedhasri Vedharathinam, Mahati Chintapalli, Junhua Wei, Sean Emerson Doris