Patents by Inventor Stephan Frenzel

Stephan Frenzel 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).

  • Formulation of contrast media and process of preparation thereof
    Patent number: 11944690
    Abstract: The present disclosure relates to a liquid pharmaceutical formulation comprising a DOSA-derived tetra-chelate of formula (I), in which M is an ion of a paramagnetic metal, preferably a Gd3+ ion, and R1, R2, R3, R4 and R5 are as defined in the claims, in a pharmaceutical acceptable solvent. The present disclosure also relates to a method of preparation of said liquid pharmaceutical formulation and to a method of imaging involving said liquid pharmaceutical formulation.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 2, 2024
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Stephan Holzschuh, Thomas Frenzel, Gregor Jost, Jessica Lohrke, Wolfgang Ebert, Thomas Brumby, Wolfgang Halfbrodt
  • Method for production of coated paper with extreme whiteness
    Patent number: 7641765
    Abstract: Paper coated with a coating slip containing at least one optical brightener is produced by a process in which base paper or precoated paper is treated, before application of the coating slip containing optical brightener, with at least one substance which enhances the efficiency of optical brighteners.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: January 5, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Thierry Blum, Friedrich Linhart, Stephan Frenzel