Patents by Inventor Mark A. Short

Mark A. Short 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).

  • One-piece single metal spinneret and method for making it
    Patent number: 5512114
    Abstract: A process for making a spinneret from a single body of metal with a yield strength of more than 350 MPa involving drilling lead spinneret holes into the mass of the body, annealing only a thin layer of the body opposite the lead holes, and forming capillary spinneret holes through the annealed layer to connect with the lead holes.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: April 30, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mark A. Short, Thomas E. Willis
  • One-piece single metal spinneret having softened capillary zone
    Patent number: 5512113
    Abstract: A one-piece single metal spinneret is disclosed having a capillary zone with capillaries of a length more than 1.5 times the capillary diameter and a yield strength, outside the capillary zone, of greater than 350 MPa. A process for making the spinneret is, also, disclosed.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: April 30, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mark A. Short, Thomas E. Willis