Patents by Inventor Christian Ewald JANSSEN

Christian Ewald JANSSEN 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: 20240130359
    Abstract: Described herein are quaternary ammonium polymers and interpenetrating polymer networks and compositions thereof with broad spectrum antimicrobial properties that produce fast acting, long lasting, non-toxic and non-allergenic colorless and transparent durable surface coatings that are resistant to water and common solvents. The surface coatings are easy and cost effective to produce from readily-available materials using versatile synthesis enabling a wide range of chemical variations. They are readily applied to a wide range of surfaces and materials, and no materials leach out of the coatings.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 25, 2024
    Applicant: Polaroid IP B.V.
    Inventors: Stephen Robert Herchen, Rong-Chang Liang, Christian Ewald Janssen
  • Publication number: 20240117196
    Abstract: Described herein are quaternary ammonium polymers with broad spectrum antimicrobial properties that produce fast acting, long lasting, non-toxic and nonallergenic colorless and transparent durable surface coatings that are resistant to water and common solvents. The surface coatings are easy and cost effective to produce from readily-available materials using versatile synthesis, enabling a wide range of chemical variations. Such coatings are readily applicable to a wide range of surfaces and materials, without leaching of material from the coatings.
    Type: Application
    Filed: September 21, 2023
    Publication date: April 11, 2024
    Applicant: POLAROID IP B.V.
    Inventors: Stephen Robert Herchen, Rong Chang Liang, Christian Ewald Janssen
  • Publication number: 20190016676
    Abstract: The invention relates to a novel hetero-Diels-Alder crosslinker, to a process for the production thereof and to the use thereof for reversibly crosslinking polymer systems.
    Type: Application
    Filed: January 20, 2017
    Publication date: January 17, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Friedrich Georg SCHMIDT, Uwe PAULMANN, Christian RICHTER, Marcel INHESTERN, Christian MEIER, Christopher BARNER-KOWOLLIK, Kai PAHNKE, Miguel Angel SANZ, Sumaira UMBREEN, Christian Ewald JANSSEN