Patents by Inventor Wayne L. Liedtke

Wayne L. Liedtke 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).

  • Patent number: 8084665
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: December 27, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Publication number: 20090177136
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Application
    Filed: February 25, 2009
    Publication date: July 9, 2009
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: 7518031
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: April 14, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: 7030288
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: April 18, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: 6838589
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: January 4, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Publication number: 20040162512
    Abstract: A wound dressing comprising an absorbent pad, an adhesive layer, and a backing layer is described, along with a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 19, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: 6436432
    Abstract: A wound dressing and delivery system comprising carrier frame that overlaps a heavy absorbent pad on a thin backing of the wound dressing (with the backing sandwiched between the pad and carrier frame) so that the carrier frame and absorbent pad support (e.g., rigidify) the backing to facilitate handling. The carrier frame also has a window over the absorbent pad. Adhesive is provided one major surface of the backing, and the absorbent pad is provided on this major surface. The carrier frame is provided on the opposite major surface to the absorbent pad. The backing is preferably a very thin transparent or translucent elastic polymeric film, and the absorbent pad is relative thick, heavy and stiff and preferably includes hydrocolloid or hydrogel materials. Slits may be provided in the carrier frame to permit one of more portions of the frame to be removed from the backing without removing the entire frame from the backing.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: August 20, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Steven B. Heinecke, Wayne L. Liedtke
  • Publication number: 20010027285
    Abstract: A wound dressing and delivery system comprising carrier frame that overlaps a heavy absorbent pad on a thin backing of the wound dressing (with the backing sandwiched between the pad and carrier frame) so that the carrier frame and absorbent pad support (e.g., rigidify) the backing to facilitate handling. The carrier frame also has a window over the absorbent pad. Adhesive is provided one major surface of the backing, and the absorbent pad is provided on this major surface. The carrier frame is provided on the opposite major surface to the absorbent pad. The backing is preferably a very thin transparent or translucent elastic polymeric film, and the absorbent pad is relative thick, heavy and stiff and preferably includes hydrocolloid or hydrogel materials. Slits may be provided in the carrier frame to permit one of more portions of the frame to be removed from the backing without removing the entire frame from the backing.
    Type: Application
    Filed: June 6, 2001
    Publication date: October 4, 2001
    Applicant: 3M Innovative Properties Company
    Inventors: Steven B. Heinecke, Wayne L. Liedtke
  • Patent number: 6264976
    Abstract: A wound dressing and delivery system comprising carrier frame that overlaps a heavy absorbent pad on a thin backing of the wound dressing (with the backing sandwiched between the pad and carrier frame) so that the carrier frame and absorbent pad support (e.g., rigidify) the backing to facilitate handling. The carrier frame also has a window over the absorbent pad. Adhesive is provided one major surface of the backing, and the absorbent pad is provided on this major surface. The carrier frame is provided on the opposite major surface to the absorbent pad. The backing is preferably a very thin transparent or translucent elastic polymeric film, and the absorbent pad is relative thick, heavy and stiff and preferably includes hydrocolloid or hydrogel materials. Slits may be provided in the carrier frame to permit one of more portions of the frame to be removed from the backing without removing the entire frame from the backing.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: July 24, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Steven B. Heinecke, Wayne L. Liedtke
  • Patent number: D503982
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: April 12, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: D511005
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: October 25, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson, David R. Holm
  • Patent number: D516729
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: March 7, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson
  • Patent number: D493230
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: July 20, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne L. Liedtke, Richard L. Jacobson, David R. Holm