Patents by Inventor Siimon Gramlich

Siimon Gramlich 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).

  • PROCESS FOR PRODUCING AROMATIC POLYETHER SULFONES
    Publication number: 20150065677
    Abstract: The process for producing aromatic polyether sulfones via reaction of a dichlorodiphenyl sulfone component with a bisphenol component as monomers in the presence of alkali metal carbonate in the melt in the absence of solvents and diluents comprises carrying out the reaction in a mixing kneader which is operated with a shear rate in the range from 5 to 500 s?1.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 5, 2015
    Inventors: Faissal-Ali El-Toufaili, Achim Stammer, Siimon Gramlich, Angela Ulzhöfer