Patents by Inventor Arun S. Agarwal

Arun S. Agarwal 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: 11280008
    Abstract: An electrochemical electrode comprising a tin-based catalyst, method of making, and method of use are provided. Catalyst particles are prepared which comprise tin deposits of about 0.1 nm to about 10 nm deposited onto carbon support. Preparing an ink comprising the catalyst particles and a binder enable an electrode to be prepared comprising the catalyst particles bound to an electrode substrate. The electrode may then be used in an apparatus and process to reduce carbon dioxide to products such as formate and formic acid at Faradaic Efficiencies up to 95 percent.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 22, 2022
    Assignee: DNV GL AS
    Inventors: Arun S. Agarwal, Edward J. Rode, Dushyant Gautam
  • Publication number: 20190256989
    Abstract: An electrochemical electrode comprising a tin-based catalyst, method of making, and method of use are provided. Catalyst particles are prepared which comprise tin deposits of about 0.1 nm to about 10 nm deposited onto carbon support. Preparing an ink comprising the catalyst particles and a binder enable an electrode to be prepared comprising the catalyst particles bound to an electrode substrate. The electrode may then be used in an apparatus and process to reduce carbon dioxide to products such as formate and formic acid at Faradaic Efficiencies up to 95 percent.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 22, 2019
    Applicant: DNV GL AS
    Inventors: Arun S. Agarwal, Edward J. Rode, Dushyant Gautam
  • Patent number: 10273587
    Abstract: An electrochemical electrode comprising a tin-based catalyst, method of making, and method of use are provided. Catalyst particles are prepared which comprise tin deposits of about 0.1 nm to 10 nm deposited onto carbon support. Preparing an ink comprising the catalyst particles and a binder enable an electrode to be prepared comprising the catalyst particles bound to an electrode substrate. The electrode may then be used in an apparatus and process to reduce carbon dioxide to products such as formate and formic acid at Faradaic Efficiencies up to 95 percent.
    Type: Grant
    Filed: January 2, 2016
    Date of Patent: April 30, 2019
    Assignee: DNV GL AS
    Inventors: Arun S. Agarwal, Edward James Rode, Dushyant Gautam
  • Patent number: 10253420
    Abstract: A process is provided for electrochemical reduction, particularly the electrochemical reduction of carbon dioxide to formate. According one embodiment, an electrochemical process includes the electrochemical reduction of carbon dioxide to formate utilizing periodic pulsed anodic polarization, periodic pulsed deep cathodic polarization, or combinations thereof to remove cathodic deposits. Various polarization techniques are disclosed which improve overall Faradaic Efficiency.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 9, 2019
    Assignee: DNV GL AS
    Inventors: Yumei Zhai, Shan Guan, Narasi Sridhar, Arun S. Agarwal
  • Publication number: 20170292196
    Abstract: A process is provided for electrochemical reduction, particularly the electrochemical reduction of carbon dioxide to formate. According one embodiment, an electrochemical process includes the electrochemical reduction of carbon dioxide to formate utilizing periodic pulsed anodic polarization, periodic pulsed deep cathodic polarization, or combinations thereof to remove cathodic deposits. Various polarization techniques are disclosed which improve overall Faradaic Efficiency.
    Type: Application
    Filed: May 30, 2017
    Publication date: October 12, 2017
    Applicant: DNV GL AS
    Inventors: Yumei Zhai, Shan Guan, Narasi Sridhar, Arun S. Agarwal
  • Publication number: 20170191174
    Abstract: An electrochemical electrode comprising a tin-based catalyst, method of making, and method of use are provided. Catalyst particles are prepared which comprise tin deposits of about 0.1 nm to 10 nm deposited onto carbon support. Preparing an ink comprising the catalyst particles and a binder enable an electrode to be prepared comprising the catalyst particles bound to an electrode substrate. The electrode may then be used in an apparatus and process to reduce carbon dioxide to products such as formate and formic acid at Faradaic Efficiencies up to 95 percent.
    Type: Application
    Filed: January 2, 2016
    Publication date: July 6, 2017
    Applicant: DNV GL AS
    Inventors: Arun S. Agarwal, Edward James Rode, Dushyant Gautam
  • Publication number: 20150354070
    Abstract: A process and apparatus are provided for the electrochemical reduction of carbon dioxide to formate. According one embodiment, an electrochemical process includes the catalytic electro-chemical reduction of carbon dioxide to formate utilizing a cathodic catalyst comprising tin and zinc, the zinc comprising between three and six weight percent of the catalyst. In a further embodiment, an electrochemical reactor for the electrochemical reduction of carbon dioxide to formate comprises a cathodic catalyst comprising tin and zinc, the zinc comprising between three and six weight percent of the catalyst.
    Type: Application
    Filed: August 19, 2015
    Publication date: December 10, 2015
    Applicant: DET NORSKE VERITAS (U.S.A.), INC.
    Inventors: Shan Guan, Narasi Sridhar, Arun S. Agarwal
  • Patent number: 9145615
    Abstract: A method and apparatus is provided for the electrochemical reduction of carbon dioxide to formate and formic acid. One embodiment features a three-compartment reactor which houses: a gas compartment; a catholyte compartment, which contains a porous cathode having a tin-based catalyst; and an anolyte compartment, which contains an anode having a mixed metal oxide catalyst. Further embodiments include a method for depositing tin onto a porous cathode, tin-zinc cathodes, a reaction method using an acidic anolyte, and pulsed polarization to extend reactor runtimes.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 29, 2015
    Inventors: Yumei Zhai, Feng Gui, Shan Guan, Narasi Sridhar, Arun S. Agarwal
  • Publication number: 20130186771
    Abstract: A method and apparatus is provided for the electrochemical reduction of carbon dioxide to formate and formic acid. One embodiment features a three-compartment reactor which houses: a gas compartment; a catholyte compartment, which contains a porous cathode having a tin-based catalyst; and an anolyte compartment, which contains an anode having a mixed metal oxide catalyst. Further embodiments include a method for depositing tin onto a porous cathode, tin zinc cathodes, a reaction method using an acidic anolyte, and pulsed polarization to extend reactor runtimes.
    Type: Application
    Filed: September 22, 2011
    Publication date: July 25, 2013
    Applicant: DET NORSKE VERITAS AS
    Inventors: Shan Guan, Narasi Sridhar, Arun S. Agarwal, Feng Gui