Patents by Inventor Richard D. Mules

Richard D. Mules 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).

  • Producing para-aramid pulp by means of gravity-induced shear forces
    Patent number: 5106560
    Abstract: A method for producing para-aramid pulp by using gravity-induced orientation of anisotropic para-aramid solutions. The solutions are those in which the para-aramid is still actively polymerizing. The process can be practiced on immobile inclined supports or on a moving inclined support in the form of a conveyer.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: April 21, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph J. Duffy, Jon D. Hartzler, Robert A. Marin, Richard D. Mules
  • Free surface casting method
    Patent number: 4810527
    Abstract: Method for free surface casting an annular layer of film-forming liquid onto a substrate in a single pass by means of laminar flow through a slot die while the substrate and slot die are undergoing rotation relative to each other.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: March 7, 1989
    Assignee: E. I. Du Pont Nemours and Company
    Inventors: James E. Geary, Jr., Kenneth W. Leffew, David R. Schiff, Richard D. Mules