Patents by Inventor Christopher M. Hoffman, JR.

Christopher M. Hoffman, JR. 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: 11932970
    Abstract: A nanofiber comprising a polyamide including at least one substituted phenyl group is provided. The nanofiber includes an average diameter from about 50 to about 1000 nm. A fibrous mat including a plurality of the nanofibers is also provided. A composite including a plurality of the nanofibers and a continuous matrix resin is also provided. A method of forming the nanofibers is also provided.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: March 19, 2024
    Inventors: Christopher M. Hoffman, Jr., Matthew P. Yeager, Morgana M. Trexler, Zhiyong Xia, Douglas A. Smith, Marcia W. Patchan
  • Patent number: 11918977
    Abstract: Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 5, 2024
    Assignee: The Johns Hopkins University
    Inventors: Christopher M. Hoffman, Jr., Zhiyong Xia, James K. Johnson
  • Patent number: 11817553
    Abstract: A gel polymer electrolyte (GPE) composition and a method of forming the same are provided. The GPE includes a polymer network and an electrolyte composition comprising a deep eutectic solvent (DES) having a eutectic point of less than or equal to 25° C. An electrochemical cell including a GPE and a method of forming the same are also provided.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: November 14, 2023
    Assignee: The Johns Hopkins University
    Inventors: Konstantinos Gerasopoulos, Christopher M. Hoffman, Jr., Adam W. Freeman, Matthew W. Logan, Spencer A. Langevin
  • Publication number: 20230097635
    Abstract: A microcapsule for use with an underwater adhesive includes a shell including nanoclay platelets and a polyurea product of an interfacial polymerization of a polyamine and an aromatic polyisocyanate. The microcapsule further includes a core composition encapsulated by the shell. The core composition includes a base catalyst for formation of a polyurethane, a polyol, and a hydrophilic solvent.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Inventors: Christopher M. Hoffman, Jr., Brian M. Koronkiewicz, Reid E. Messersmith, Mairead E. Bartlett
  • Publication number: 20230027521
    Abstract: Contaminant-sequestering coatings include a network of hydrolyzed silane compounds including (i) a plurality of fluorinated functionalities, and (ii) a plurality of thiol functional groups are provided. The network of hydrolyzed silane compounds includes a fluorinated silane including (a) a hydrophilic polar head region. The polar head region includes one or multiple units of ethylene glycol (EG) functionality, (b) a fluorine-containing region, and (c) an anchor region including a silicon atom. The contaminant-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species, or any combination thereof.
    Type: Application
    Filed: August 22, 2022
    Publication date: January 26, 2023
    Inventors: Christopher M. Hoffman, JR., Zhiyong Xia, James K. Johnson
  • Publication number: 20230001378
    Abstract: Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.
    Type: Application
    Filed: August 22, 2022
    Publication date: January 5, 2023
    Inventors: Christopher M. Hoffman, Jr., Zhiyong Xia, James K. Johnson
  • Publication number: 20220332975
    Abstract: Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and/or does not absorb UV radiation/light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.
    Type: Application
    Filed: May 18, 2022
    Publication date: October 20, 2022
    Inventors: Jason J. Benkoski, Rengaswamy Srinivasan, Christopher M. Hoffman, JR., Keith S. Caruso
  • Patent number: 11452987
    Abstract: Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: September 27, 2022
    Assignee: The Johns Hopkins University
    Inventors: Christopher M. Hoffman, Jr., Zhiyong Xia, James K. Johnson
  • Patent number: 11447659
    Abstract: Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and/or does not absorb UV radiation/light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: September 20, 2022
    Assignee: The Johns Hopkins University
    Inventors: Jason J. Benkoski, Rengaswamy Srinivasan, Christopher M. Hoffman, Jr., Keith S. Caruso
  • Patent number: 11387488
    Abstract: Gel polymer electrolyte compositions including a cross-linked three-dimensional polymer network and an electrolyte composition comprising an electrolyte and water are provided. The gel polymer electrolyte compositions can be included in an aqueous electrochemical cell, in which a gel polymer electrolyte can be positioned between an anode and a cathode. Methods of forming a gel polymer electrolyte in the form of a film are also provided. Methods of forming an aqueous electrochemical cell including a gel polymer electrolyte are also provided.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: July 12, 2022
    Assignee: The Johns Hopkins University
    Inventors: Konstantinos Gerasopoulos, Adam W. Freeman, Christopher M. Hoffman, Jr.
  • Patent number: 11248125
    Abstract: A coating system may be configured to be applied to an aluminum-magnesium substrate of an object. The coating system may include a primer configured to reduce the corrosion rate of the aluminum-magnesium substrate and a topcoat configured to resist water and improve solar reflectance of the coating system. The primer may include a silicate and a first additive configured to increase corrosion resistance of the coating system The topcoat may include a siloxane and a second additive configured to reduce solar absorptance of the coating system.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: February 15, 2022
    Assignee: The Johns Hopkins University
    Inventors: Jason J. Benkoski, Christopher M. Hoffman, Jr., Rengaswamy Srinivasan, Keith S. Caruso
  • Patent number: 11203694
    Abstract: An anti-fouling coating comprising a polymeric compound, wherein a backbone of the polymeric compound is covalently bonded to a quorum sensing inhibitor, and wherein the anti-fouling coating has substantially no bactericidal activity, the quorum sensing inhibitor is substantially non-leaching from the anti-fouling coating, or both.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: December 21, 2021
    Assignee: The Johns Hopkins University
    Inventors: Christopher M. Hoffman, Jr., Adam W. Freeman, Konstantinos Gerasopoulos, James K. Johnson, Felix C. Sage, Spencer A. Langevin, Reid E. Messersmith
  • Publication number: 20210277278
    Abstract: Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and/or does not absorb UV radiation/light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.
    Type: Application
    Filed: March 3, 2020
    Publication date: September 9, 2021
    Inventors: Jason J. Benkoski, Rengaswamy Srinivasan, Christopher M. Hoffman, Jr., Keith S. Caruso
  • Publication number: 20200398249
    Abstract: Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 24, 2020
    Inventors: Christopher M. Hoffman, JR., Zhiyong Xia, James K. Johnson
  • Publication number: 20200343586
    Abstract: A gel polymer electrolyte (GPE) composition and a method of forming the same are provided. The GPE includes a polymer network and an electrolyte composition comprising a deep eutectic solvent (DES) having a eutectic point of less than or equal to 25° C. An electrochemical cell including a GPE and a method of forming the same are also provided.
    Type: Application
    Filed: September 4, 2019
    Publication date: October 29, 2020
    Inventors: Konstantinos Gerasopoulos, Christopher M. Hoffman, JR., Adam W. Freeman, Matthew W. Logan, Spencer A. Langevin
  • Patent number: 10801131
    Abstract: Example methods and articles of manufacture related to electrospun aramid nanofibers are provided. One example method may include forming a resultant solution by reacting a solution of aramids dissolved in a solvent with an electrophile. In this regard, the electrophile may perform a side chain substitution on the dissolved aramids. The example method may further include electrospinning the resultant solution to form an aramid nanofiber.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 13, 2020
    Assignee: The Johns Hopkins University
    Inventors: Matthew P. Yeager, Christopher M. Hoffman, Jr., Morgana M. Trexler, Zhiyong Xia
  • Publication number: 20200224335
    Abstract: A nanofiber comprising a polyamide including at least one substituted phenyl group is provided. The nanofiber includes an average diameter from about 50 to about 1000 nm. A fibrous mat including a plurality of the nanofibers is also provided. A composite including a plurality of the nanofibers and a continuous matrix resin is also provided. A method of forming the nanofibers is also provided.
    Type: Application
    Filed: August 28, 2019
    Publication date: July 16, 2020
    Inventors: Christopher M. Hoffman, JR., Matthew P. Yeager, Morgana M. Trexler, Zhiyong Xia, Douglas A. Smith, Marcia W. Patchan
  • Publication number: 20190237803
    Abstract: Gel polymer electrolyte compositions including a cross-linked three-dimensional polymer network and an electrolyte composition comprising an electrolyte and water are provided. The gel polymer electrolyte compositions can be included in an aqueous electrochemical cell, in which a gel polymer electrolyte can be positioned between an anode and a cathode. Methods of forming a gel polymer electrolyte in the form of a film are also provided. Methods of forming an aqueous electrochemical cell including a gel polymer electrolyte are also provided.
    Type: Application
    Filed: August 3, 2018
    Publication date: August 1, 2019
    Inventors: Konstantinos Gerasopoulos, Adam W. Freeman, Christopher M. Hoffman, JR.
  • Publication number: 20190031886
    Abstract: A coating system may be configured to be applied to an aluminum-magnesium substrate of an object. The coating system may include a primer configured to reduce the corrosion rate of the aluminum-magnesium substrate and a topcoat configured to resist water and improve solar reflectance of the coating system. The primer may include a silicate and a first additive configured to increase corrosion resistance of the coating system The topcoat may include a siloxane and a second additive configured to reduce solar absorptance of the coating system.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 31, 2019
    Inventors: Jason J. Benkoski, Christopher M. Hoffman, JR., Rengaswamy Srinivasan, Keith S. Caruso
  • Publication number: 20170342599
    Abstract: Example methods and articles of manufacture related to electrospun aramid nanofibers are provided. One example method may include forming a resultant solution by reacting a solution of aramids dissolved in a solvent with an electrophile. In this regard, the electrophile may perform a side chain substitution on the dissolved aramids. The example method may further include electrospinning the resultant solution to form an aramid nanofiber.
    Type: Application
    Filed: March 24, 2017
    Publication date: November 30, 2017
    Inventors: Matthew P. Yeager, Christopher M. Hoffman, JR., Morgana M. Trexler, Zhiyong Xia