Patents by Inventor Andreas R. Schmidt

Andreas R. Schmidt 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).

  • Methods and compositions for the extraction and amplification of nucleic acid from a sample
    Patent number: 11952569
    Abstract: Provided herein are methods, compositions and kits to extract and relatively enrich by physical separation or amplification short base pair nucleic acid in the presence of a high background of genomic material (e.g., host or maternal nucleic acids).
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: April 9, 2024
    Assignee: SEQUENOM, INC.
    Inventors: Carolyn R. Hoyal-Wrightson, Andreas Braun, Karsten E. Schmidt
  • Reinforced polyurethane tires
    Patent number: 4519432
    Abstract: This invention relates to reinforced tire utilizing polyurea or polyurethane formulations having low hysteresis. The polymer having low hysteresis is formed by reacting a prepolymer of an aromatic isocyanate and a high molecular weight difunctional polyol with a chain extender mix comprising an aromatic diamine and difunctional polyol. In these compositions the aromatic diisocyanate and aromatic diamine are selected so that there is substantial symmetry between the molecules. The reinforcement used is preferably an aromatic polyamide.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: May 28, 1985
    Assignee: Lim International S.A.
    Inventors: Andreas R. Schmidt, Herbert F. Strohmayer, Walter Sibral, Barton Milligan
  • Polyurethane compositions having low hysteresis
    Patent number: 4507459
    Abstract: This invention pertains to the synthesis of polyurethane systems having low hysteresis. The systems are generated by reacting a prepolymer of a mononuclear diisocyanate and a polyol with a chain extender mix of a mononuclear aromatic diamine and a polyol. The prepolymer should have a free isocyanate content of from 2 to about 12% by weight and the chain extender mix should have an amine to polyol equivalent from about 0.5 to 5:1.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: March 26, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Andreas R. Schmidt, Herbert F. Strohmayer, Walter Sibral, Barton Milligan