Patents by Inventor Stephan Silbermann

Stephan Silbermann 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).

  • Method of pulping cotton-based raw material
    Patent number: 11939405
    Abstract: The present invention relates to a method of pulping cotton-based raw material for producing dissolving pulp. More specifically, the invention relates to a process for producing dissolving pulp under alkaline conditions in combination with a gaseous oxidizing agent. The present invention further relates to dissolving pulp obtainable by pulping cotton-based raw material, in particular dissolving pulp obtainable by the method of the present invention, the use of such dissolving pulp for producing regenerated cellulose molded bodies, and methods of producing lyocell or viscose including such dissolving pulp.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 26, 2024
    Assignee: Lenzing AG
    Inventors: Stephan Silbermann, Christian Weilach
  • METHOD OF PULPING COTTON-BASED RAW MATERIAL
    Publication number: 20210130501
    Abstract: The present invention relates to a method of pulping cotton-based raw material for producing dissolving pulp. More specifically, the invention relates to a process for producing dissolving pulp under alkaline conditions in combination with a gaseous oxidizing agent. The present invention further relates to dissolving pulp obtainable by pulping cotton-based raw material, in particular dissolving pulp obtainable by the method of the present invention, the use of such dissolving pulp for producing regenerated cellulose molded bodies, and methods of producing lyocell or viscose including such dissolving pulp.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 6, 2021
    Inventors: Stephan Silbermann, Christian Weilach