Patents by Inventor Ken Espenschied

Ken Espenschied 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).

  • HLB copolymers
    Patent number: 11896953
    Abstract: Polymeric adsorbents useful for solid phase extraction (SPE) comprising a copolymer formed by copolymerizing at least one hydrophobic monomer including divinylbenzene and at least one hydrophilic monomer including acrylonitrile are provided. Also provided are SPE cartridges including a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent. Further provided are methods of using a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent in conventional and simplified SPE techniques.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 13, 2024
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: William Betz, Curtis Frantz, Michael Keeler, Michael Ye, Ken Espenschied, Sara Smith, Brittany A. Smith
  • IMPROVED HLB COPOLYMERS
    Publication number: 20200197907
    Abstract: Polymeric adsorbents useful for solid phase extraction (SPE) comprising a copolymer formed by copolymerizing at least one hydrophobic monomer including divinylbenzene and at least one hydrophilic monomer including acrylonitrile. Also provided are SPE cartridges including a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent. Further provides are methods of using a divinylbenzene-acrylonitrile hydrophilic-lipophilic balance adsorbent in conventional and simplified SPE techniques.
    Type: Application
    Filed: August 24, 2018
    Publication date: June 25, 2020
    Inventors: William Betz, Curtis Frantz, Michael Keeler, Michael Ye, Ken Espenschied, Sara Smith, Brittany A. Smith