Patents by Inventor Thi Tan VU

Thi Tan VU 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).

  • Patent number: 11939221
    Abstract: A method for the manufacture of reduced graphene oxide from electrode graphite scrap including the provision of the graphite electrode scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode, an oxidation step of the ground graphite electrode to obtain graphene oxide and the reduction into reduced graphene oxide.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: March 26, 2024
    Assignee: ArcelorMittal
    Inventors: Thi Tan Vu, Abel Alvarez-Alvarez, Roberto Suarez Sanchez
  • Publication number: 20240025751
    Abstract: A method for the manufacture of reduced graphene oxide from Kish graphite including: the provision of Kish graphite, the intercalation of Kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated Kish graphite, the expansion of the intercalated Kish graphite at room temperature to obtain expanded Kish graphite, the mixture of the expanded Kish graphite with at least an acid and an oxidizing agent while the gases generated during the expansion step are still at least partially present so that the expanded Kish graphite is simultaneously oxidized, exfoliated and reduced into reduced graphene oxide.
    Type: Application
    Filed: November 13, 2020
    Publication date: January 25, 2024
    Inventors: Thi Tan VU, Ana ARENAS VIVO, David NORIEGA PEREZ, Roberto SUAREZ SANCHEZ
  • Publication number: 20240018004
    Abstract: A method for the manufacture of a self-standing graphene oxide or reduced graphene oxide film having a thickness between 0.4 and 4.0 ?m, including the successive steps of A) preparing an aqueous dispersion including 0.1 to 30 g·L?1 of graphene oxide or reduced graphene oxide, B) depositing the aqueous dispersion on a flat substrate coated with a polymeric film dissolvable in organic solvents and unsolvable in water, so as to form a wet film having a thickness comprised between 1 ?m and 3.5 mm, C) drying the wet film, D) separating the polymeric film from the flat substrate, E) placing the polymeric film in a support frame, F) showering the polymeric film with an organic solvent to dissolve the polymeric film, G) separating the graphene oxide or reduced graphene oxide film from the frame to obtain the self-standing graphene oxide or reduced graphene oxide film.
    Type: Application
    Filed: November 18, 2020
    Publication date: January 18, 2024
    Inventors: Laura MEGIDO FERNANDEZ, Cristina BOTAS VELASCO, Thi Tan VU, Roberto SUAREZ SANCHEZ
  • Publication number: 20230383391
    Abstract: A coated cast iron substrate including a coating including nanographites and a binder being sodium silicate, wherein the cast iron substrate has a composition, in weight percent, including from 2.0 to 6.67% C and including optionally one or more of the following elements: Mn?3 wt %, Si?5 wt %, Mo?2 wt %, Cu?2.5 wt %, Ni?2 wt %, Cr?3 wt %, V?0.5 wt %, Zr?0.3 wt %, Bi?0.01 wt %, Mg?0.1 wt %, Ce?wt %, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated cast iron substrate is also provided.
    Type: Application
    Filed: October 29, 2020
    Publication date: November 30, 2023
    Inventors: Thi Tan VU, Laura MEGIDO FERNANDEZ, Carlota DOMINGUEZ FERNANDEZ, Jorge RODRIGUEZ GARCIA, David NORIEGA PEREZ, Roberto SUAREZ SANCHEZ, Cristina BLANCO ROLDAN
  • Patent number: 11702341
    Abstract: The present invention provides a method for the manufacture of graphene oxide from Kish graphite.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 18, 2023
    Assignee: ArcelorMittal
    Inventors: Thi Tan Vu, Maria Cabanas Corrales, Abel Alvarez-Alvarez
  • Publication number: 20220411911
    Abstract: A coated stainless-steel substrate including a coating including nanographites and a binder being sodium silicate, wherein the stainless-steel substrate has the following composition in weight percent: C?1.2%, Cr?11.0%, Ni?8.0% and on a purely optional basis, one or more elements such as Nb?6.0%, B?1.0%, Ti?3.0%, Cu?5.0%, Co?3.0%, N?1.0%, V?3.0%, Si?4.0%, Mn?5.0%, P?0.5%, S?0.5%, Mo?6.0%, Ce?1.0%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated stainless-steel substrate is also provided.
    Type: Application
    Filed: October 29, 2020
    Publication date: December 29, 2022
    Inventors: Thi Tan VU, Laura MEGIDO FERNANDEZ, Carlota DOMINGUEZ FERNANDEZ, Jorge RODRIGUEZ GARCIA, David NORIEGA PEREZ, Roberto SUAREZ SANCHEZ, Cristina BLANCO ROLDAN
  • Patent number: 11535519
    Abstract: A method for the manufacture of pristine graphite from Kish graphite including three different steps A, B and C; the pristine obtained with among others a high amount of carbon atoms, i.e. a pristine graphene having a high purity; and the use of this pristine graphene.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: December 27, 2022
    Assignee: ArcelorMittal
    Inventors: Thi Tan Vu, Oscar Perez Vidal, Roberto Suarez Sanchez
  • Publication number: 20220234898
    Abstract: A method for the manufacture of reduced graphene oxide from kish graphite including: A. The provision of kish graphite, B. Optionally, a pre-treatment of kish graphite, C. The intercalation of kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated kish graphite, D. The expansion of the intercalated kish graphite to obtain expanded kish graphite and E. An oxidation step of the expanded kish graphite to obtain graphene oxide and F. A reduction of graphene oxide into reduced graphene oxide.
    Type: Application
    Filed: May 12, 2020
    Publication date: July 28, 2022
    Inventors: Thi Tan VU, David NORIEGA PEREZ, Roberto SUAREZ SANCHEZ
  • Patent number: 11390529
    Abstract: The present invention provides a method for the manufacture of reduced graphene oxide from Kish graphite.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 19, 2022
    Assignee: ArcelorMittal
    Inventors: Thi Tan Vu, Maria Cabanas Corrales, Abel Alvarez-Alvarez
  • Publication number: 20220212934
    Abstract: A method is provided for the manufacture of graphene oxide from kish graphite including: A. The provision of kish graphite, B. Optionally, a pre-treatment of kish graphite, C. The intercalation of kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated kish graphite, D. The expansion of the intercalated kish graphite to obtain expanded kish graphite and E. An oxidation step of the expanded kish graphite to obtain graphene oxide.
    Type: Application
    Filed: May 12, 2020
    Publication date: July 7, 2022
    Inventors: Thi Tan VU, Roberto SUAREZ SANCHEZ
  • Publication number: 20210230000
    Abstract: A method for the manufacture of pristine graphite from Kish graphite including three different steps A, B and C; the pristine obtained with among others a high amount of carbon atoms, i.e. a pristine graphene having a high purity; and the use of this pristine graphene.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 29, 2021
    Inventors: Thi Tan VU, Oscar PEREZ VIDAL, Roberto SUAREZ SANCHES
  • Publication number: 20210230003
    Abstract: A method for the manufacture of reduced graphene oxide from electrode graphite scrap including the provision of the graphite electrode scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode, an oxidation step of the ground graphite electrode to obtain graphene oxide and the reduction into reduced graphene oxide.
    Type: Application
    Filed: April 10, 2019
    Publication date: July 29, 2021
    Inventors: Thi Tan VU, Abel ALVAREZ-ALVAREZ, Roberto SUAREZ SANCHEZ
  • Publication number: 20210221687
    Abstract: A method for the manufacture of graphene oxide from Kish graphite including the pretreatment of kish graphite and the oxidation of pre-treated kish graphite into graphene oxide, the graphene oxide obtained with at least 45% by weight of oxygen functional groups and the use of the graphene oxide.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 22, 2021
    Inventor: Thi Tan VU
  • Publication number: 20210221688
    Abstract: A method for the manufacture of reduced graphene oxide from Kish graphite including the pretreatment of kish graphite, the oxidation of pre-treated kish graphite into graphene oxide and the reduction of graphene oxide into reduced graphene oxide, the reduced graphene oxide and the use of the graphene oxide.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 22, 2021
    Inventor: Thi Tan VU
  • Publication number: 20210214232
    Abstract: A method for the manufacture of microwave-reduced graphene oxide (MW-rGO) including: the provision of graphene oxide (GO), the reduction of GO into reduced graphene oxide (rGO) using a reducing agent and the reduction of rGO into MW-rGO by microwaving under air atmosphere in presence of a catalyst.
    Type: Application
    Filed: July 9, 2019
    Publication date: July 15, 2021
    Inventors: Thi Tan VU, Oscar PEREZ VIDAL, Juan Jose ARRIBAS, David NORIEGA PEREZ, Roberto SUAREZ SANCHEZ
  • Publication number: 20210206646
    Abstract: A method for the manufacture of graphene oxide from electrode graphite scrap including the provision of electrode graphite scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode and an oxidation step of the ground graphite electrode to obtain graphene oxide.
    Type: Application
    Filed: April 10, 2019
    Publication date: July 8, 2021
    Inventors: Thi Tan VU, Abel ALVAREZ-ALVAREZ, Roberto SUAREZ SANCHEZ
  • Publication number: 20210179434
    Abstract: The present invention provides a method for the manufacture of reduced graphene oxide from Kish graphite.
    Type: Application
    Filed: March 26, 2018
    Publication date: June 17, 2021
    Inventors: Thi Tan VU, Maria CABANAS CORRALES, Abel ALVAREZ-ALVAREZ
  • Publication number: 20210094829
    Abstract: The present invention provides a method for the manufacture of graphene oxide from Kish graphite.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 1, 2021
    Inventors: Thi Tan VU, Maria CABANAS CORRALES, Abel ALVAREZ-ALVAREZ
  • Publication number: 20200340075
    Abstract: A coated steel substrate including a coating comprising nanographite having a lateral size between 1 and 60 ?m and a binder, wherein the steel substrate has the following compositions in weight percent: 0.31?C?1.2%, 0.1?Si?1.7%, 0.15?Mn?1.1%, P?0.01%, S?0.1%, Cr?1.0%, Ni?1.0%, Mo?0.1%, and on a purely optional basis, one or more elements such as Nb?0.05%, B?0.003%, Ti?0.06%, Cu?0.1%, Co?0.1%, N?0.01%, V?0.05%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration and a method for the manufacture of the coated steel substrate.
    Type: Application
    Filed: December 11, 2018
    Publication date: October 29, 2020
    Inventors: Thi Tan VU, Marcos PEREZ RODRIGUEZ, Carlos LALIENA IRANZO, David NORIEGA PEREZ