Patents by Inventor Paul Thomas Shea

Paul Thomas Shea 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 for control of extrusion process
    Patent number: 6627127
    Abstract: Disclosed is a process for controlling extrusion processes by applying dynamic periodic pulses to the process throughout and during the process, analyzing the pulse response data and feeding back the results of the analysis to the process parameters and product properties.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 30, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael Joseph Piovoso, Paul Thomas Shea, Chi-Kai Shih, Mark David Wetzel
  • Aqueous developable flexographic printing plate
    Patent number: 6210854
    Abstract: An aqueous developable photosensitive element comprising a support and a photosensitive layer provided thereon, said layer containing (a) an elastomeric microgel binder having an elastomeric core which can be crosslinked and a thermoplastic noncrosslinked shell, (b) an initiator, (c) an ethylenically unsaturated monomer or oligomer and optionally (d) a basic compound capable of neutralizing the acidic functionality and method of use to make an aqueous developable flexographic printing plate is described.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: April 3, 2001
    Assignees: E. I. du Pont de Nemours and Company, Reichhold Chemical
    Inventors: Jan Grossman, John Anthony Quinn, David William Swatton, Jose Antonio Briones, Paul Thomas Shea
  • Lasers engravable multilayer flexographic printing element
    Patent number: 5804353
    Abstract: A process for making a multilayer flexographic printing plate which involves reinforcing and laser engraving a multilayer flexographic printing element.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: September 8, 1998
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Stephen Cushner, Roxy Ni Fan, Ernst Leberzammer, John Anthony Quinn, Paul Thomas Shea, Carol Marie Van Zoeren
  • Laser engravable single-layer flexographic printing element
    Patent number: 5798202
    Abstract: A process for making a single layer flexographic printing plate which involves reinforcing and laser engraving a single layer flexographic printing element.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: August 25, 1998
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Stephen Cushner, Roxy Ni Fan, Ernst Leberzammer, Paul Thomas Shea, Carol Marie Van Zoeren
  • Process for preparing an aqueous developable photosensitive element
    Patent number: 5707773
    Abstract: An aqueous developable photosensitive element comprising a support and a photosensitive layer provided thereon, said layer containing (a) an elastomeric microgel binder having an elastomeric core which can be crosslinked and a thermoplastic noncrosslinked shell, (b) an initiator, (c) an ethylenically unsaturated monomer or oligomer and optionally (d) a basic compound capable of neutralizing the acidic functionality and method of use to make an aqueous developable flexographic printing plate is described.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: January 13, 1998
    Assignees: E. I. Du Pont de Nemours and Company, Reichhold Chemicals
    Inventors: Jan Grossman, John Anthony Quinn, David William Swatton, Jose Antonio Briones, Paul Thomas Shea