Patents by Inventor Ralph Ewall

Ralph Ewall 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).

  • Publication number: 20030065304
    Abstract: A transdermal reservoir and a method of the present invention for loading a material into a reservoir includes providing an reservoir including a backing with an interior surface comprising a bibulous reservoir having a patient contact surface with a shape disposed on the interior surface of the backing. The method includes providing a closure sized and shaped to engage the backing for forming a releasable seal to isolate the bibulous reservoir from the ambient environment, the closure is removable from the housing to expose the patient contact surface for use. The provided closure has an inside surface with a section of an absorbent material disposed thereon. The provided section has a first surface so that when the closure is disposed on the backing, the absorbent material first surface is positioned in intimate physical contact with the reservoir. The method includes applying an aliquot of a material to the absorbent material.
    Type: Application
    Filed: October 18, 2002
    Publication date: April 3, 2003
    Applicant: Becton, Dickinson and Company
    Inventors: Michael I. Bernhard, Ralph Ewall, Curtis Karl, Preston Keusch, Gary Kupperblatt, Daniel O'Grady
  • Patent number: 6496727
    Abstract: A transdermal reservoir and method for loading a material into a reservoir includes providing a bibulous reservoir blocking a backing with an interior surface having a patient contact surface with a shape disposed on the interior surface of the backing. A closure is sized and shaped to engage the backing for forming a releasable seal to isolate the bibulous reservoir from the ambient environment. The closure has an inside surface with a section of an absorbent material disposed thereon. When the closure is disposed on the backing, the absorbent material is positioned in intimate physical contact with the reservoir. The method includes applying an aliquot of a material to the absorbent material,. placing the closure on the backing so that the absorbent material is in intimate physical contact with the contact surface of the bibulous reservoir and the closure forms the releasable seal with the backing.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: December 17, 2002
    Assignee: Becton, Dickinson and Company
    Inventors: Michael I. Bernhard, Ralph Ewall, Curtis Karl, Preston Keusch, Gary Kupperblatt, Daniel O'Grady
  • Patent number: 5607388
    Abstract: Liquid and pathogen impermeable island wound dressing which can be adhesively bonded to the skin surrounding a wound is provided with a liquid and gas permeable exudate absorbing pad, and a plurality of sequentially removable liquid and microorganism impermeable, gas and moisture vapor permeable cover sheets disposed adjacent to and covering the pad.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: March 4, 1997
    Assignee: Hercules Incorporated
    Inventor: Ralph Ewall
  • Patent number: 5556375
    Abstract: An island wound dressing comprising a fenestrated base layer, an absorbent pad positioned in the base layer fenestration, and a liquid and microorganism impermeable, gas and moisture vapor permeable cover sheet.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: September 17, 1996
    Assignee: Hercules Incorporated
    Inventor: Ralph Ewall
  • Patent number: 5522794
    Abstract: Method of enhancing the healing of human wounds by controlling the microenvironment of the wound by sequentially applying to the wound dressings having moisture and oxygen permeabilities appropriate for the healing phases of the wound.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: June 4, 1996
    Assignee: Hercules Incorporated
    Inventor: Ralph Ewall