Patents by Inventor Kenneth R. Shull

Kenneth R. Shull 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: 20200164317
    Abstract: Methods for making porous polyelectrolyte complex (PEC) films are provided. In an embodiment, such a method comprises coating the surface of a substrate with a polyelectrolyte (PE) coacervate mixture, the PE coacervate mixture comprising a cationic polymer, an anionic polymer, water, and a salt, the PE coacervate having a salt concentration; exposing the coating to an aqueous medium having another salt concentration, for a time to induce solidification of polyelectrolyte complexes (PECs) in the form of a PEC film having pores distributed throughout, wherein a difference ??C-M #191 between the salt concentration of the PE coacervate mixture and the salt concentration of the aqueous medium is selected to achieve a predetermined porosity for the porous PEC film.
    Type: Application
    Filed: May 9, 2018
    Publication date: May 28, 2020
    Applicant: Northwestern University
    Inventors: Kenneth R. SHULL, Kazi SADMAN, Qifeng WANG
  • Patent number: 10604648
    Abstract: Methods for forming a polyelectrolyte complex (PEC) film are provided. In embodiments, the method comprises applying a potential between a working electrode and a counter electrode, the electrodes in contact with an aqueous polyelectrolyte solution characterized by a bulk pH. The aqueous polyelectrolyte solution comprises a pH sensitive PEC pair comprising an unmodified anionic polymer and a cationic species, an electrochemical pH agent other than water, and a salt. The applied potential induces an electrochemical reaction of the electrochemical pH agent to generate OH? or H+ at the working electrode without inducing water electrolysis in the aqueous polyelectrolyte solution, thereby forming a PEC film from the unmodified anionic polymer and the cationic species on a surface of the working electrode.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 31, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Kenneth R. Shull, Kazi Sadman, Qifeng Wang
  • Publication number: 20180237632
    Abstract: Methods for forming a polyelectrolyte complex (PEC) film are provided. In embodiments, the method comprises applying a potential between a working electrode and a counter electrode, the electrodes in contact with an aqueous polyelectrolyte solution characterized by a bulk pH. The aqueous polyelectrolyte solution comprises a pH sensitive PEC pair comprising an unmodified anionic polymer and a cationic species, an electrochemical pH agent other than water, and a salt. The applied potential induces an electrochemical reaction of the electrochemical pH agent to generate OH? or H+ at the working electrode without inducing water electrolysis in the aqueous polyelectrolyte solution, thereby forming a PEC film from the unmodified anionic polymer and the cationic species on a surface of the working electrode.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 23, 2018
    Inventors: Kenneth R. Shull, Kazi Sadman, Qifeng Wang
  • Patent number: 7943703
    Abstract: A method of creating a bioadhesive in a substantially aqueous environment is disclosed. The method includes the steps of placing an anionicially polymerized block copolymer containing an amide, which is prepared by reacting a difunctional anionic initiator with a sterically hindered ester of methacrylic acid (SEMA), into a solvent to allow the solvent to swell the block copolymer; reacting the anionically polymerized hindered ester of methacrylic acid with methacrylic acid (MMA); hydrolyzing the anionically polymerized block copolymer with an aqueous solution to afford a methyl methacrylate-methacrylic acid-methyl methacrylate block copolymer (MMA-MAA-MMA); reacting the MMA-MAA-MMA block copolymer with 3,4-dihydroxyphenyl alanine to afford an amide with the MAA portion of the block copolymer; and placing the solvent swollen block copolymer in water. The water is exchanged with the solvent to provide a bioadhesive in an aqueous environment.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 17, 2011
    Assignee: Northwestern University
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Patent number: 7732539
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate) is disclosed.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 8, 2010
    Assignee: National Science Foundation
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B Messersmith, Bruce P Lee
  • Patent number: 7635737
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methoacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate).
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 22, 2009
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Publication number: 20090298999
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methoacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate).
    Type: Application
    Filed: February 27, 2009
    Publication date: December 3, 2009
    Applicant: Northwestern University
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Publication number: 20090247704
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methoacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate).
    Type: Application
    Filed: February 27, 2009
    Publication date: October 1, 2009
    Applicant: Northwestern University
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Publication number: 20090240000
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methoacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate).
    Type: Application
    Filed: February 27, 2009
    Publication date: September 24, 2009
    Applicant: Northwestern University
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Publication number: 20090163661
    Abstract: A method of producing an acrylic block copolymer comprising hydrophobic poly (lower alkyl methoacrylate), hydrophilic poly (lower alkyl methacrylic acid), and hydrophobic poly (lower alkyl methacrylate).
    Type: Application
    Filed: February 27, 2009
    Publication date: June 25, 2009
    Applicant: Northwestern University
    Inventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
  • Patent number: 6547366
    Abstract: A method for removing contaminants from an ink jet print head having a nozzle plate with a plurality of nozzles, having the steps of: a) applying a heat-activatable adhesive material over the surface of the nozzle plate having contaminants on the surface thereof; b) applying heat to the heat-activatable to the adhesive material to cause it to flow over the surface of the nozzle plate having contaminants on the surface thereof, thereby causing the contaminants to adhere to the heat-activatable adhesive material; and c) removing the heat-activatable adhesive material having the contaminants adhered thereto.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: April 15, 2003
    Assignee: Eastman Kodak Company
    Inventors: Ravi Sharma, Zhihao Yang, Kenneth R. Shull
  • Publication number: 20020075347
    Abstract: A method for removing contaminants from an ink jet print head having a nozzle plate with a plurality of nozzles, the method comprising:
    Type: Application
    Filed: December 18, 2000
    Publication date: June 20, 2002
    Applicant: Eastman Kodak Company
    Inventors: Ravi Sharma, Zhihao Yang, Kenneth R. Shull