Patents by Inventor Randell Clevenger

Randell Clevenger 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: 20230121929
    Abstract: A method of preparing a modified-metal surface. The method includes preparing a solution of a phosphorous-based acid in a solvent; immersing a strip of the metal work piece into the solution of the phosphorous-based acid; immersing a strip of a reference metal into the solution of the phosphorous-based acid; supplying a voltage for a duration of time to prepare a phosphorous acid-modified metal work piece; removing the phosphorous acid-modified metal work piece; cleaning and drying the phosphorous acid-modified metal work piece; applying a chitosan solution to the surface in order to attach chitosan/modified chitosan to the phosphorous acid based modified surface; prepare the modified-metal surface; and cleaning and drying the modified-metal surface.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 20, 2023
    Inventors: Randell CLEVENGER, Gordon D. DONALD, Cheoljin KIM
  • Publication number: 20230055449
    Abstract: Articles having functional surfaces, for example antimicrobial functional surfaces, are prepared by methods comprising anodization. Organophosphorous compounds are deposited on a surface by methods comprising anodization, followed by attaching functional compounds, functional oligomers or functional polymers. Alternatively, functional organophosphorous compounds, functional oligomers or functional polymers are deposited on a surface by methods comprising anodization.
    Type: Application
    Filed: October 21, 2022
    Publication date: February 23, 2023
    Inventors: Randell Clevenger, Jordan Katz
  • Publication number: 20230025164
    Abstract: A composition comprising a doubly conjugated chitosan polymer or oligomer, and a functionalized metal work piece including the doubly conjugated chitosan polymer or oligomer.
    Type: Application
    Filed: July 20, 2022
    Publication date: January 26, 2023
    Inventors: Randell Clevenger, Cheoljin Kim, Kristin Blacklock
  • Patent number: 11540514
    Abstract: A method of preparing a modified-metal surface. The method includes preparing a solution of a phosphorous-based acid in a solvent; immersing a strip of the metal work piece into the solution of the phosphorous-based acid; immersing a strip of a reference metal into the solution of the phosphorous-based acid; supplying a voltage for a duration of time to prepare a phosphorous acid-modified metal work piece; removing the phosphorous acid-modified metal work piece; cleaning and drying the phosphorous acid-modified metal work piece; applying a chitosan solution to the surface in order to attach chitosan/modified chitosan to the phosphorous acid based modified surface; prepare the modified-metal surface; and cleaning and drying the modified-metal surface.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: January 3, 2023
    Assignee: MOLECULAR SURFACE TECHNOLOGIES, LLC
    Inventors: Randell Clevenger, Gordon D. Donald, Cheoljin Kim
  • Patent number: 11332840
    Abstract: A method of preparing a modified-metal surface by attaching a phosphorous-based acid to a surface of a metal: preparing a solution of the phosphorous-based acid in a protic solvent; immersing a strip of a metal work piece into the solution of the phosphorous-based acid, immersing a strip of a reference metal into the solution of the phosphorous-based acid, supplying a voltage for a duration of time, removing the metal work piece, cleaning the metal work piece, and drying the cleaned metal work piece under an inert atmosphere to obtain a modified metal work piece.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: May 17, 2022
    Assignee: Molecular Surface Technologies, LLC
    Inventors: Randell Clevenger, Gordon D. Donald
  • Publication number: 20210352903
    Abstract: Articles having functional surfaces, for example antimicrobial functional surfaces, are prepared by methods comprising anodization. Organophosphorous compounds are deposited on a surface by methods comprising anodization, followed by attaching functional compounds, functional oligomers or functional polymers. Alternatively, functional organophosphorous compounds, functional oligomers or functional polymers are deposited on a surface by methods comprising anodization.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Inventors: Randell Clevenger, Jordan Katz
  • Patent number: 11154061
    Abstract: Articles having functional surfaces, for example antimicrobial functional surfaces, are prepared by methods comprising anodization. Organophosphorous compounds are deposited on a surface by methods comprising anodization, followed by attaching functional compounds, functional oligomers or functional polymers. Alternatively, functional organophosphorous compounds, functional oligomers or functional polymers are deposited on a surface by methods comprising anodization.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: October 26, 2021
    Assignee: ORTHOBOND CORPORATION
    Inventors: Randell Clevenger, Jordan Katz
  • Publication number: 20210207282
    Abstract: A method of preparing a modified-metal surface by attaching a phosphorous-based acid to a surface of a metal: preparing a solution of the phosphorous-based acid in a protic solvent; immersing a strip of a metal work piece into the solution of the phosphorous-based acid, immersing a strip of a reference metal into the solution of the phosphorous-based acid, supplying a voltage for a duration of time, removing the metal work piece, cleaning the metal work piece, and drying the cleaned metal work piece under an inert atmosphere to obtain a modified metal work piece.
    Type: Application
    Filed: December 28, 2020
    Publication date: July 8, 2021
    Inventors: Randell Clevenger, Gordon D. Donald
  • Publication number: 20200404905
    Abstract: A method of preparing a modified-metal surface. The method includes preparing a solution of a phosphorous-based acid in a solvent; immersing a strip of the metal work piece into the solution of the phosphorous-based acid; immersing a strip of a reference metal into the solution of the phosphorous-based acid; supplying a voltage for a duration of time to prepare a phosphorous acid-modified metal work piece; removing the phosphorous acid-modified metal work piece; cleaning and drying the phosphorous acid-modified metal work piece; applying a chitosan solution to the surface in order to attach chitosan/modified chitosan to the phosphorous acid based modified surface; prepare the modified-metal surface; and cleaning and drying the modified-metal surface.
    Type: Application
    Filed: June 19, 2020
    Publication date: December 31, 2020
    Inventors: Randell Clevenger, Gordon D. Donald, Cheoljin Kim
  • Patent number: 10876217
    Abstract: A method of preparing a modified-metal surface by attaching a phosphorous-based acid to a surface of a metal: preparing a solution of the phosphorous-based acid in a protic solvent; immersing a strip of a metal work piece into the solution of the phosphorous-based acid, immersing a strip of a reference metal into the solution of the phosphorous-based acid, supplying a voltage for a duration of time, removing the metal work piece, cleaning the metal work piece, and drying the cleaned metal work piece under an inert atmosphere to obtain a modified metal work piece.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: December 29, 2020
    Assignee: Molecular Surface Technologies, LLC
    Inventors: Randell Clevenger, Gordon D. Donald
  • Publication number: 20200206776
    Abstract: A method of photografting organic molecules to a metal oxide comprising: (a) contacting a substrate having a metal oxide layer on a surface thereof with an acrylate, derivative thereof or a photolabile functional group; and (b) exposing the metal oxide layer and the acrylate, derivative thereof or photolabile group to UV or visible radiation to form covalent bonds between the metal oxide and the acrylate, the derivative thereof or the photolabile.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Inventors: Randell Clevenger, Gordon D. Donald
  • Publication number: 20200109483
    Abstract: A method of preparing a modified-metal surface by attaching a phosphorous-based acid to a surface of a metal: preparing a solution of the phosphorous-based acid in a protic solvent; immersing a strip of a metal work piece into the solution of the phosphorous-based acid, immersing a strip of a reference metal into the solution of the phosphorous-based acid, supplying a voltage for a duration of time, removing the metal work piece, cleaning the metal work piece, and drying the cleaned metal work piece under an inert atmosphere to obtain a modified metal work piece.
    Type: Application
    Filed: April 12, 2019
    Publication date: April 9, 2020
    Inventors: Randell Clevenger, Gordon D. Donald
  • Patent number: 10596304
    Abstract: Devices are provided which are functionalized to include surface regions having anti-infective agents. Methods are provided for functionalizing various material surfaces to include active surface regions for binding anti-infective agents. Methods are provided by which anti-infective moieties or agents are bonded to functionalized surfaces.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 24, 2020
    Assignees: Orthobond Corporation, The Trustees of Princeton University
    Inventors: Randell Clevenger, Thomas J. Dennes, Jeffrey Schwartz
  • Patent number: 10471177
    Abstract: Disclosed in certain embodiments is a composition comprising a biological material and transition metal atoms selected from the group consisting of Group IVB, Group VB, Group VIB of the Periodic Chart and a combination thereof, bound to a surface of the biological material.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 12, 2019
    Assignee: Orthobond Corporation
    Inventors: Randell Clevenger, Rong Dong, Jordan Katz
  • Patent number: 10390533
    Abstract: Articles having metal, metalloid or non-metal surfaces containing an antimicrobial layer comprising antimicrobial oligomers or polymers are suitable for use in medical devices, sanitary surfaces and other applications. Antimicrobial layers contain an organophosphorus layer deposited on an article surface and antimicrobial oligomers or polymers bonded to the organophosphorus layer.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: August 27, 2019
    Assignee: ORTHOBOND CORPORATION
    Inventor: Randell Clevenger
  • Publication number: 20180103643
    Abstract: Articles having functional surfaces, for example antimicrobial functional surfaces, are prepared by methods comprising anodization. Organophosphorous compounds are deposited on a surface by methods comprising anodization, followed by attaching functional compounds, functional oligomers or functional polymers. Alternatively, functional organophosphorous compounds, functional oligomers or functional polymers are deposited on a surface by methods comprising anodization.
    Type: Application
    Filed: October 17, 2017
    Publication date: April 19, 2018
    Inventor: Randell Clevenger
  • Publication number: 20180103642
    Abstract: Articles having metal, metalloid or non-metal surfaces containing an antimicrobial layer comprising antimicrobial oligomers or polymers are suitable for use in medical devices, sanitary surfaces and other applications. Antimicrobial layers contain an organophosphorus layer deposited on an article surface and antimicrobial oligomers or polymers bonded to the organophosphorus layer.
    Type: Application
    Filed: October 17, 2017
    Publication date: April 19, 2018
    Inventor: Randell Clevenger
  • Publication number: 20180099075
    Abstract: Devices are provided which are functionalized to include surface regions having anti-infective agents. Methods are provided for functionalizing various material surfaces to include active surface regions for binding anti-infective agents. Methods are provided by which anti-infective moieties or agents are bonded to functionalized surfaces.
    Type: Application
    Filed: April 26, 2017
    Publication date: April 12, 2018
    Inventors: Randell Clevenger, Jeffrey Schwartz
  • Publication number: 20170266343
    Abstract: Disclosed in certain embodiments is a composition comprising a biological material and transition metal atoms selected from the group consisting of Group IVB, Group VB, Group VIB of the Periodic Chart and a combination thereof, bound to a surface of the biological material.
    Type: Application
    Filed: February 3, 2017
    Publication date: September 21, 2017
    Inventors: Randell Clevenger, Rong Dong, Jordan Katz
  • Publication number: 20170224882
    Abstract: Devices are provided which are functionalized to include surface regions having anti-infective agents. Methods are provided for functionalizing various material surfaces to include active surface regions for binding anti-infective agents. Methods are provided by which anti-infective moieties or agents are bonded to functionalized surfaces.
    Type: Application
    Filed: April 26, 2017
    Publication date: August 10, 2017
    Inventors: Randell Clevenger, Jeffrey Schwartz