Patents by Inventor Dirk Heinrich Bücker

Dirk Heinrich Bücker 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).

  • STRETCHED FLUOROPOLYMERS
    Publication number: 20220064821
    Abstract: The present invention is directed to stretched filaments based on fluoropolymers, where the filaments were stretched at a temperature between 70° C. and the Vicat temperature and where the filaments are cooled under full tensile load to room temperature.
    Type: Application
    Filed: December 17, 2019
    Publication date: March 3, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Lan DE GANS LI, Martin WIELPUETZ, Markus HARTMANN, Dirk Heinrich BUECKER
  • MELT-DRAWN POLYAMIDE FILAMENTS
    Publication number: 20210381135
    Abstract: Stretched filaments based on linear, branched or cyclic, aliphatic or semiaromatic polyamides, wherein the filaments have been stretched at a temperature between glass transition temperature and melting point and wherein the filaments are cooled down to room temperature under full tensile load.
    Type: Application
    Filed: October 9, 2019
    Publication date: December 9, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Lan de Gans Li, Martin Wielpütz, Markus Hartmann, Dirk Heinrich Bücker
  • STRETCHED AROMATIC POLYETHERS
    Publication number: 20210332507
    Abstract: Stretched filaments based on aromatic polyethers, wherein the filaments have been stretched at a temperature between glass transition temperature and melting point and wherein the filaments are cooled down to below the glass transition temperature under full tensile load and a process for production thereof and use thereof.
    Type: Application
    Filed: October 17, 2019
    Publication date: October 28, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Lan de Gans Li, Martin Wielpütz, Markus Hartmann, Dirk Heinrich Bücker