Patents by Inventor Wolfgang Wittwer

Wolfgang Wittwer 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: 11891496
    Abstract: The present invention relates to a curable cyanoacrylate composition comprising (i) at least one cyanoacrylate monomer, and (ii) at least one free radical stabilizer, wherein the free radical stabilizer is non-hazardous and shows good compatibility to the cyanoacrylate but does not impair the reactivity of the cyanoacrylate and its performance after curing.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: February 6, 2024
    Assignee: H.B. Fuller Company
    Inventors: Lars P. Hoyer, Wolfgang Wittwer
  • Publication number: 20220282063
    Abstract: The present invention relates to a curable cyanoacrylate composition comprising (i) at least one cyanoacrylate monomer, and (ii) at least one free radical stabilizer, wherein the free radical stabilizer is non-hazardous and shows good compatibility to the cyanoacrylate but does not impair the reactivity of the cyanoacrylate and its performance after curing.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 8, 2022
    Inventors: Lars P. Hoyer, Wolfgang Wittwer
  • Publication number: 20220186069
    Abstract: A method for producing a coating on a surface of a component part or a device, the method comprises obtaining a two component polyurethane system having a Component A and a Component B, Component A comprises a polyol and Component B comprises an isocyanate. Either Component A or Component B or both components comprise a filler. The method includes mixing Components A and B, to form a mixture comprising the polyol, the isocyanate, and the filler. The method includes applying the mixture to a surface of a component part or a device to form a coating from the mixture; and allowing the applied coating to cure. The steps of applying the coating and allowing the applied coating to cure are performed at an ambient temperature, and the viscosity of the mixture immediately after the mixing step is from 10 Pas to 500 Pas at 23° C.
    Type: Application
    Filed: October 31, 2019
    Publication date: June 16, 2022
    Inventors: Wolfgang Wittwer, Timo Backes