Patents by Inventor John A. Dawson

John A. Dawson 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: 8083712
    Abstract: A flat-hose assembly has a proximal end and a distal end adapted for use with a negative pressure wound drainage system. The flat-hose assembly comprises a top layer, a bottom layer, and a filter layer. The bottom layer forms an opening at the distal end of the flat-hose assembly to allow exudates of a wound to flow into the flat-hose assembly. The filter layer is disposed between the top layer and the bottom layer. The top and bottom layer form a seal area along a periphery of the top layer and the bottom layer to seal the filter layer therebetween.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: December 27, 2011
    Assignee: Neogen Technologies, Inc.
    Inventors: Lydia B. Biggie, John A. Dawson
  • Patent number: 8034038
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch 1 is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 11, 2011
    Assignee: NeoGen Technologies, Inc.
    Inventors: John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Patent number: 7731702
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end and secured at the other end to a portable drain/suction unit. The pouch contains porous material. The tubing can have a single or multi-lumen structure. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin. A cosmetic cover sheet is attached to the patient's skin over the closed wound drainage system.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: June 8, 2010
    Assignee: NeoGen Technologies, Inc.
    Inventors: Farhad Bybordi, John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Publication number: 20090204085
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch 1 is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch.
    Type: Application
    Filed: March 13, 2009
    Publication date: August 13, 2009
    Applicant: NEOGEN TECHNOLOGIES, INC.
    Inventors: John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Patent number: 7520872
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch 1 is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 21, 2009
    Assignee: NeoGen Technologies, Inc.
    Inventors: John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Publication number: 20080271804
    Abstract: A flat-hose assembly has a proximal end and a distal end adapted for use with a negative pressure wound drainage system. The flat-hose assembly comprises a top layer, a bottom layer, and a filter layer. The bottom layer forms an opening at the distal end of the flat-hose assembly to allow exudates of a wound to flow into the flat-hose assembly. The filter layer is disposed between the top layer and the bottom layer. The top and bottom layer form a seal area along a periphery of the top layer and the bottom layer to seal the filter layer therebetween.
    Type: Application
    Filed: March 20, 2007
    Publication date: November 6, 2008
    Inventors: Lydia B. Biggie, John A. Dawson
  • Patent number: 6979324
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: December 27, 2005
    Assignee: NeoGen Technologies, Inc.
    Inventors: Farhad Bybordi, John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Publication number: 20040054338
    Abstract: A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventors: Farhad Bybordi, John J. Biggie, Lydia B. Biggie, John A. Dawson
  • Patent number: 5501057
    Abstract: A unit masonry fence and method for its installation. The unit masonry fence has footings, structurally rigid support posts extending upwardly from the footings and fence panels mounted over the support posts and supported by the footings. Each fence panel is made up of a beam extending generally the length of the panel and having a receptacle toward the ends thereof for receiving the support posts. A number of unit masonry courses are laid on the beam. The unit masonry courses terminate at each end with a pilaster made from pilaster masonry units laid integrally. The pilaster masonry units have a main body portion broader than the adjacent unit masonry courses and an opening extending through the body portion for receiving the support posts.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: March 26, 1996
    Assignee: Canada Brick
    Inventor: John A. Dawson
  • Patent number: 5011747
    Abstract: A metal/air battery is described having gas bubbled through the electrolyte. It includes: (a) a tank defining a reservoir for liquid electrolyte; (b) one or more metal-air cells disposed for immersion in electrolyte, each cell including at least one air cathode having a first surface disposed for contact with electrolyte and a second surface exposed to air and a metal anode disposed for immersion in electrolyte in facing spaced relation to the first cathode surface to constitute therewith an anode-cathode pair electrically coupled by electrolyte, (c) a bubbler tube extending horizontally in the electrolyte reservoir beneath each cell and serving to inject gas bubbles into electrolyte between the anode and cathode of each cell, and (d) means for providing a pulsating flow of gas to the bubbler tube(s).
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: April 30, 1991
    Assignee: Alcan International Limited
    Inventors: David S. Strong, John A. Dawson
  • Patent number: 4871627
    Abstract: A multi-cell metal/air battery is described having series-connected cells, including a tank for holding a body of liquid electrolyte, and an electrically non-conductive frame carrying a plurality of air cathode assemblies, each cathode assembly having a common air pocket and a pair of cathodes, and a like plurality of anodes respectively juxtaposed to the cathodes outside the air chamber, the air cathode assemblies being removably insertable in the tank and engaging the tank wall, when inserted, so as to divide the tank into a plurality of separate and substantially electrically isolated electrolyte-holding zones each containing one anode-cathode pair. The air cathode assembly may include an air circulation system to keep the air in the pocket fresh. The tank may also include an electrolyte distribution system and a flushing system for flushing the battery without the need to remove the cathodes and anodes from the tank.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: October 3, 1989
    Assignee: Alcan International Limited
    Inventors: David S. Strong, John A. Dawson