Patents by Inventor Neeltje WIJMA

Neeltje WIJMA 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).

  • Urea urethanes (II)
    Patent number: 10882944
    Abstract: Suggested is a urea urethane with improved rheological properties, obtainable or obtained according to a process encompassing or consisting of the following steps: (a) providing a monohydroxyl compound; (b) providing a diisocyanate compound; (c) reacting said monohydroxyl compound and said diisocyanate compound to form a pre-polymer; (d) reacting said pre-polymer with a diamine compound, Wherein said pre-polymer and said diamine are reacted in the presence of a surfactant.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: January 5, 2021
    Assignee: CliQ SwissTech B.V.
    Inventors: Daniel Haveman, Adrianus Peter Van Veen, Neeltje Wijma
  • UREA URETHANES (II)
    Publication number: 20190135969
    Abstract: Suggested is a urea urethane with improved rheological properties, obtainable or obtained according to a process encompassing or consisting of the following steps: (a) providing a monohydroxyl compound; (b) providing a diisocyanate compound; (c) reacting said monohydroxyl compound and said diisocyanate compound to form a pre-polymer; (d) reacting said pre-polymer with a diamine compound, Wherein said pre-polymer and said diamine are reacted in the presence of a surfactant.
    Type: Application
    Filed: September 14, 2018
    Publication date: May 9, 2019
    Inventors: Daniel HAVEMAN, Adrianus Peter VAN VEEN, Neeltje WIJMA