Patents by Inventor David J. Stinson

David J. Stinson 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).

  • Fountain solution recycling system for commercial printers
    Patent number: 7314547
    Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: January 1, 2008
    Inventors: David J. Stinson, David D. Douglas, Roy E. Seibert, Jose A. Villarreal
  • Fountain solution recycling system for commercial printers
    Patent number: 7112282
    Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: September 26, 2006
    Inventors: David J. Stinson, David A. Douglas, Roy E. Seibert, Jose A. Villarreal
  • Fountain solution recycling system for commercial printers
    Patent number: 7087159
    Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: August 8, 2006
    Inventors: David J. Stinson, David A. Douglas, Roy E. Seibert, Jose A. Villarreal
  • Fountain solution recycling system for commercial printers
    Patent number: 6908558
    Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a posttreatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post-treatment filter preferably comprises a zeolite filter.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: June 21, 2005
    Inventors: David J. Stinson, David A. Douglas, Roy E. Seibert, Jose A. Villarreal
  • Fountain solution recycling system for commercial printers
    Publication number: 20040182796
    Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 23, 2004
    Inventors: David J. Stinson, David D. Douglas, Roy E. Seibert, Jose A. Villarreal