Patents by Inventor Markus Lehrl

Markus Lehrl 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 for producing sulfur-containing polymers
    Patent number: 6538102
    Abstract: The present invention relates to a process for preparing sulfur-containing polymers from at least one sulfide and from at least one aromatic dihalogen compound in at least one solvent, where a) a mixture made from a sulfide and from a solvent is prepared in a first reaction vessel, b) the sulfide and an aromatic dihalogen compound react in a second reaction vessel to form a sulfur-containing polymer, c) the pressure in the second reaction vessel is to some extent or completely released during the reaction, and the emanating vapor mixture is brought into contact with the mixture prepared in step (a).
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 25, 2003
    Assignee: Ticona GmbH
    Inventors: Michael Haubs, Reinhard Wagener, Markus Lehrl