Patents by Inventor John Dempster

John Dempster 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).

  • Universal warning stripe slitting machine
    Patent number: 7424852
    Abstract: A slitting machine includes a stand for supporting a web which is slit into multiple ribbons by a plurality of blades, with the ribbons being wound on corresponding cores supported on an arbor. A common ink roller is mounted across the feedpath of the web and has a printing surface configured to print an end-of-roll warning stripe in a universal pattern bridging adjacent ribbons irrespective of individual width thereof.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: September 16, 2008
    Assignee: NCR Corporation
    Inventors: John Dempster, Blair Boudreau, Dianne Bateman
  • Universal warning stripe slitting machine
    Publication number: 20060078714
    Abstract: A slitting machine includes a stand for supporting a web which is slit into multiple ribbons by a plurality of blades, with the ribbons being wound on corresponding cores supported on an arbor. A common ink roller is mounted across the feedpath of the web and has a printing surface configured to print an end-of-roll warning stripe in a universal pattern bridging adjacent ribbons irrespective of individual width thereof.
    Type: Application
    Filed: October 7, 2004
    Publication date: April 13, 2006
    Inventors: John Dempster, Blair Boudreau, Dianne Bateman
  • Single reactor process for preparing acrylic acid from propylene having improved capacity
    Patent number: 6384274
    Abstract: This invention relates to an improved process for preparing acrylic acid from propylene using a single reactor utilizing an increased amount of propylene reactant thereby providing increased capacity and throughput.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: May 7, 2002
    Assignee: Rohm and Haas Company
    Inventors: James Edward Elder, Charles Michael Lonzetta, Timothy Allen Hale, John Dempster Sornson, Peter David Klugherz, Thomas Albert Kaminski, Donald Alan Ebert