Patents by Inventor Leonard J. Herbig

Leonard J. Herbig 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).

  • Method of producing polymeric filaments
    Publication number: 20040140582
    Abstract: A method of making polymeric, e.g., polyester, filaments having low denier spread by use of a polymer of high viscosity is described. The filaments are useful to make yarns and other articles.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 22, 2004
    Inventors: Hans R. E. Frankfort, Leonard J. Herbig, Gregory E. Sweet, George Vassilatos
  • Method of producing polymeric filaments
    Publication number: 20020037411
    Abstract: A method of making polymeric, e.g., polyester, filaments having low denier spread by use of a polymer of high viscosity is described. The filaments are useful to make yarns and other articles.
    Type: Application
    Filed: July 9, 2001
    Publication date: March 28, 2002
    Inventors: Hans R. Frankfort, Leonard J. Herbig, Gregory E. Sweet, George Vassilatos