Patents by Inventor Andrew J. Barko

Andrew J. Barko 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).

  • Substituted ramsdellite manganese dioxides in an alkaline electrochemical cell
    Patent number: 11133499
    Abstract: Substituted ramsdellite manganese dioxide (R—MnO2) compounds are provided, where a portion of the Mn is replaced by at least one alternative cation, or a portion of the O is replaced by at least one alternative anion. Electrochemical cells incorporating substituted R—MnO2 into the cathode, as well as methods of preparing the substituted R—MnO2, are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: September 28, 2021
    Assignee: Energizer Brands, LLC
    Inventors: Guanghong Zheng, Andrew J. Barko, Chuze Ma, Bin Li, Julie Diana Goetz, Charlie Nguyen
  • SUBSTITUTED RAMSDELLITE MANGANESE DIOXIDES IN AN ALKALINE ELECTROCHEMICAL CELL
    Publication number: 20200365888
    Abstract: Substituted ramsdellite manganese dioxide (R—MnO2) compounds are provided, where a portion of the Mn is replaced by at least one alternative cation, or a portion of the O is replaced by at least one alternative anion. Electrochemical cells incorporating substituted R—MnO2 into the cathode, as well as methods of preparing the substituted R—MnO2, are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 19, 2020
    Inventors: Guanghong Zheng, Andrew J. Barko, Chuze Ma, Bin Li, Julie Diana Goetz, Charlie Nguyen
  • Removal of cyanides from acetonitrile
    Patent number: 4328075
    Abstract: The present invention relates to a process for removing cyanides from a crude acetonitrile stream. Caustic and formaldehyde are added to an aqueous acetonitrile stream that contains cyanide. The formaldehyde "kills" the cyanides and provides a waste stream that can be conveniently disposed of.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: May 4, 1982
    Assignee: Standard Oil Company
    Inventors: William O. Fitzgibbons, Andrew J. Barko