Patents by Inventor Robert E. First

Robert E. First 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).

  • Sealing plate for a spinnerette assembly
    Patent number: 5147197
    Abstract: A device for changing the filament count from a spinnerette assembly includes a sealing plate positioned upstream from the spinnerette assembly to prevent the passage of the material being spun into one or more particular spinnerette bores.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: September 15, 1992
    Assignee: BASF Corporation
    Inventors: John A. Hodan, Robert N. Armstrong, Robert E. First