Patents by Inventor Paul Takunda Chazovachii

Paul Takunda Chazovachii 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).

  • Super absorbent polymer recycling to pressure sensitive adhesives
    Patent number: 11781045
    Abstract: Methods for upcycling crosslinked sodium polyacrylate to pressure sensitive adhesives via (a) mechanochemical chain-shortening and esterification or (b) esterifying with high conversion with a Fischer esterification process are disclosed. Also disclosed is a pressure sensitive adhesive prepared by the disclosed methods and articles comprising the pressure sensitive adhesive, including, but not limited to, pressure sensitive tape, a bandage, a label, note pads, a decal, a stamp, an envelope, a sticker, packaging, automobile trim, and a film.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: October 10, 2023
    Assignee: The Procter & Gamble Company
    Inventors: Dimitris Ioannis Collias, Paul Zimmerman, Paul Takunda Chazovachii, Michael Robo, Anne McNeil, Neil Marsh, Martin Ian James
  • Super absorbent polymer recycling to pressure sensitive adhesives
    Patent number: 11739240
    Abstract: Methods for upcycling crosslinked sodium polyacrylate to pressure sensitive adhesives via (a) mechanochemical chain-shortening and esterification or (b) esterifying with high conversion with a Fischer esterification process are disclosed. Also disclosed is a pressure sensitive adhesive prepared by the disclosed methods and articles comprising the pressure sensitive adhesive, including, but not limited to, pressure sensitive tape, a bandage, a label, note pads, a decal, a stamp, an envelope, a sticker, packaging, automobile trim, and a film.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 29, 2023
    Assignee: The Procter & Gamble Company
    Inventors: Dimitris Ioannis Collias, Paul Zimmerman, Paul Takunda Chazovachii, Michael Robo, Anne McNeil, Neil Marsh, Martin Ian James
  • Microplastic Removal Using Adhesives
    Publication number: 20230234028
    Abstract: Articles comprising pressure-sensitive adhesives and methods of their use for removing micro- and nanoplastic particles from various media, including wastewater effluent, laundry effluent, and indoor air, are disclosed.
    Type: Application
    Filed: November 29, 2022
    Publication date: July 27, 2023
    Inventors: Dimitris Ioannis Collias, Anne McNeil, Paul Takunda Chazovachii, Woojung Ji
  • PREPARATION OF PRESSURE SENSITIVE ADHESIVES FROM POST-CONSUMER SUPERABSORBENT POLYMERS
    Publication number: 20220403217
    Abstract: Methods, including a one-step synthesis method, for chemically modifying crosslinked sodium polyacrylate to form pressure sensitive adhesives are disclosed.
    Type: Application
    Filed: April 13, 2022
    Publication date: December 22, 2022
    Inventors: Paul Takunda Chazovachii, Anne J. McNeil, Madeline Somers, Jose Alfaro
  • DEPOLYMERIZATION OF POLYMERS
    Publication number: 20210054161
    Abstract: Provided herein is technology relating to depolymerization of polymers and particularly, but not exclusively, to methods and systems for de-crosslinking polyacrylate salt-based polymers and other polymers and compositions made from de-crosslinking polyacrylate salt-based polymers and other polymers.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 25, 2021
    Inventors: Dimitris Ioannis Collias, Paul Zimmerman, Paul Takunda Chazovachii, Michael Robo, Anne McNeil, John McDaniel
  • SUPER ABSORBENT POLYMER RECYCLING TO PRESSURE SENSITIVE ADHESIVES
    Publication number: 20210054248
    Abstract: Methods for upcycling crosslinked sodium polyacrylate to pressure sensitive adhesives via (a) mechanochemical chain-shortening and esterification or (b) esterifying with high conversion with a Fischer esterification process are disclosed. Also disclosed is a pressure sensitive adhesive prepared by the disclosed methods and articles comprising the pressure sensitive adhesive, including, but not limited to, pressure sensitive tape, a bandage, a label, note pads, a decal, a stamp, an envelope, a sticker, packaging, automobile trim, and a film.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 25, 2021
    Inventors: Dimitris Ioannis Collias, Paul Zimmerman, Paul Takunda Chazovachii, Michael Robo, Anne McNeil, Neil Marsh, Martin Ian James