Patents by Inventor Otto Hermann-Schonherr

Otto Hermann-Schonherr 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).

  • Weathering-resistant polymer alloys
    Patent number: 5789492
    Abstract: For optical applications, transparent amorphous thermo-plastics, such as polyaryl ether ketones, are of considerable interest. However, polyaryl ether ketones have inadequate UV stability and weathering resistance while amorphous polyaryl esters do not have these negative properties. The properties can be improved by means of polymer alloys, giving weathering-resistant materials from homogeneously mixed polymers which comprise at least one amorphous polyaryl ether ketone and at least one amorphous polyaryl ester.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: August 4, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Michael-Joachim Brekner, Hansotto Drotloff, Otto Hermann-Schonherr, Arnold Schneller
  • Homogeneous polymer alloys based on sulfonated aromatic polyether ketones
    Patent number: 5510424
    Abstract: Homogeneous polymer alloys based on sulfonated, aromatic polyether ketonesHomogeneous polymer alloys comprising sulfonated, aromatic polyether ketones and at least one polyamide as the main constituents, wherein the polyamide is a completely aromatic polyamide.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: April 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Freddy Helmer-Metzmann, Otto Hermann-Schonherr, Uwe Kampschulte
  • Alloys having one glass transition temperature
    Patent number: 5189104
    Abstract: Polymer alloys based on polybenzimidazoles are of great interest in industry due to their extraordinary thermal and mechanical properties. Alloys composed of a homo- or copolybenzimidazole and poly-N-vinylpyrrolidone are homogeneously mixed and have only one glass transition temperature.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: February 23, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Michael Haubs, Otto Hermann-Schonherr, Harald Cherdron