Patents by Inventor David Siefker

David Siefker 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 of making polypeptides
    Patent number: 10519278
    Abstract: Various embodiments disclosed relate to a method of forming a polypeptide. The method includes contacting a first amino acid-derived N-thiocarboxyanhydrosulfide monomer as a crystalline solid with a polymerization initiator (e.g., in an alkane suspension) to give a polypeptide product. The method further includes contacting the polypeptide product with a second amino acid-derived N-thiocarboxyanhydrosulfide monomer in an alkane suspension.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: December 31, 2019
    Assignee: BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY
    Inventors: Donghui Zhang, Jinbao Cao, Brandon Chan, David Siefker
  • METHODS OF MAKING POLYPEPTIDES
    Publication number: 20180057634
    Abstract: Various embodiments disclosed relate to a method of forming a polypeptide. The method includes contacting a first amino acid-derived N-thiocarboxyanhydrosulfide monomer as a crystalline solid with a polymerization initiator (e.g., in an alkane suspension) to give a polypeptide product. The method further includes contacting the polypeptide product with a second amino acid-derived N-thiocarboxyanhydrosulfide monomer in an alkane suspension.
    Type: Application
    Filed: August 25, 2017
    Publication date: March 1, 2018
    Inventors: Donghui Zhang, Jinbao Cao, Brandon Chan, David Siefker