Patents by Inventor William D. Knopf

William D. Knopf 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).

  • Blood vessel sealing system
    Publication number: 20080161849
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a preformed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back through the sealing material after the access opening is sealed.
    Type: Application
    Filed: December 17, 2007
    Publication date: July 3, 2008
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney
  • Blood vessel sealing system
    Patent number: 7331981
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a preformed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back through the sealing material after the access opening is sealed.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: February 19, 2008
    Assignee: CCH Associates, LLC
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney
  • Blood vessel sealing system
    Publication number: 20040172060
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a preformed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back through the sealing material after the access opening is sealed.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 2, 2004
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney
  • Blood vessel sealing system
    Patent number: 6699261
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a preformed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back through the sealing material after the access opening is sealed.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 2, 2004
    Assignee: CCH Associates, Inc.
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney
  • Blood vessel sealing system
    Patent number: 6162240
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a performed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back though the sealing material after the access opening is sealed.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: December 19, 2000
    Assignee: CCH Associates, LLC
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney
  • Blood vessel sealing system
    Patent number: 6056768
    Abstract: A method of and apparatus for sealing access openings into blood vessels using an expandable member in the blood vessel on a control member that extends out through the access opening and an applicator which inserts a preformed sealing material into the access opening over the control member to keep the control member and expandable member centered in the access opening and withdrawing the collapsed expandable member back through the sealing material after the access opening is sealed.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: May 2, 2000
    Inventors: Christopher U. Cates, William D. Knopf, Douglass G. Whitney