Patents by Inventor William John Hommes

William John Hommes 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).

  • Apparatus for forming a photosensitive element having a layer of particulate material
    Patent number: 6892668
    Abstract: The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: May 17, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Roxy Ni Fan, William John Hommes
  • Apparatus for forming a photosensitive element having a layer of particulate material
    Publication number: 20040159404
    Abstract: The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 19, 2004
    Inventors: Roxy Ni Fan, William John Hommes
  • Process for forming a photosensitive element having a layer of particulate material
    Patent number: 6777163
    Abstract: The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: August 17, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Roxy Ni Fan, William John Hommes
  • Process for forming a photosensitive element having a layer of particulate material and an apparatus for performing the process
    Publication number: 20040067438
    Abstract: The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.
    Type: Application
    Filed: October 2, 2002
    Publication date: April 8, 2004
    Inventors: Roxy Ni Fan, William John Hommes
  • Method for forming a cylindrical photosensitive element
    Patent number: 6425327
    Abstract: A method for forming a seamless cylindrical photosensitive element on a flexible cylindrical sleeve wherein the flexible sleeve is mounted onto a sleeve support to isolate the flexible sleeve from high temperature and/or high pressure associated with forming a cylindrical photosensitive layer on the flexible sleeve.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Roxy Ni Fan, William John Hommes
  • Method for controlling tenter clip gap spacing during simultaneous biaxial stretching using linear synchronous motors
    Patent number: 5939845
    Abstract: A method is disclosed of temporarily speeding up delayed carriages on a return side of an endless loop of driven carriages in a linear motor web tenter.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 17, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: William John Hommes
  • Tenter clip cleaning method and apparatus
    Patent number: 5771547
    Abstract: A method and apparatus is disclosed for ejecting a loose film edge from a film stretching clip by directing a jet of fluid such as air through a channel in the clip and between adjacent clips at or before release of a film from the clip and also after release of the film.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: June 30, 1998
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: William John Hommes, Albert White Forrest, Jr., Paul G. Jennings