Patents by Inventor Bruce E. Barnes

Bruce E. Barnes 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: 20080204245
    Abstract: A system determines the presence or absence of objects by interrogating or exciting transponders coupled to the objects using pulsed signals over a number of wide band frequency bands with dynamic tuning about a center frequency of each band and less sensitivity to noise fluctuation.
    Type: Application
    Filed: February 27, 2008
    Publication date: August 28, 2008
    Inventors: William A. Blair, Bruce E. Barnes, David A. Poirier
  • Patent number: 5819681
    Abstract: An anchoring device, for use with a personal watercraft, having a tube containing layers of material including cement and a heavier material, preferably shot, used in a ratio which produces a predetermined weight. The tube is sealed with end caps. A shock absorber is positioned within the tube preferably between one of the end caps and the cement. One end cap has a fastener by which the anchoring device can be fastened to the personal watercraft. The tube and end caps are coated with a moisture and abrasion resistant material.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: October 13, 1998
    Inventors: Bruce E. Barnes, Sharon E. Barnes
  • Patent number: 4954251
    Abstract: Microaggregate blood filter adapted to pre-filter aggregates larger than 150 microns without interfering with the on-going and continuous filtration of aggregates between 40 and 150 microns. Filter comprises a flexible housing having inlet and outlet ports and an interior nest of two generally cylindrical concentric outer and inner filter screens with a space between the screens. Blood to be filtered enters the housing from the top and is pre-filtered for aggregates larger than 150 microns by the inner screen. The inner screen defines a relatively large interior volume which allows filtered aggregates to collect by sedimentation at its lower portions in a manner that permits on-going, continuous, and unobstructed filtration of the blood through its upper portion for subsequent and final filtration through the outer 40 micron filter. A preferred filter has a transparent housing and built in drip chamber and can be primed without inverting the filter.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: September 4, 1990
    Assignee: Miles Inc.
    Inventors: Bruce E. Barnes, Richard Furuzawa, Paul Kahn
  • Patent number: 4670013
    Abstract: A blood container for storage of blood and blood components is disclosed. The invention comprises a blood container and a multiple blood bag system which includes a donor bag and one or more satellite bags connected by flexible tubing. The blood bag is made of polyvinyl chloride (PVC) plasticized with a blend of plasticizers comprising a plasticizer resistant to blood extraction such as a triester of trimellitic acid and a 7-10 carbon alcohol and a blood extractable plasticizer such as a dioctyl phthalate or dioctyl adipate and is suitable for long term storage of whole blood, red cells and platelets. The blood container is made of a thin material which contains a plasticizer composition extractable at much lower levels by blood or plasma than conventional phalate plasticized PVC. Blood and blood components processed or stored in the blood bags will exhibit relatively low levels of contamination by plasticizer.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: June 2, 1987
    Assignee: Miles Laboratories, Inc.
    Inventors: Bruce E. Barnes, Mohan S. Mahal
  • Patent number: 4586928
    Abstract: Frangible valve for a closed plastic bag system comprising an upper member having a bore and located within a port on a plastic bag and a solid lower member extending into the bag. The lower member is attached to the upper member by at least one tether and includes a bore-sealing portion attached to the upper member via a weakened portion. In use, the bore-sealing portion is separated from the upper member by external manipulation to permit fluid flow through the bore while the bore-sealing portion remains tethered to the valve. In preferred embodiments, two tethers are included on opposite sides of the bore-sealing portion and the tethered bore-sealing portion includes means for keeping it separated from the bore in a fully open position after the bore seal has been broken.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: May 6, 1986
    Assignee: Miles Laboratories, Inc.
    Inventors: Bruce E. Barnes, William W. Dupin, Bruce W. Kuhlemann
  • Patent number: D568186
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: May 6, 2008
    Assignee: RF Surgical Systems, Inc.
    Inventors: William A. Blair, Bruce E. Barnes, David A. Poirier