Patents by Inventor Donald M. Davies

Donald M. Davies 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).

  • Foil sealed cassette for agglutination reactions and liner therefor
    Patent number: 5780248
    Abstract: A vessel for conducting blood cell agglutination assays is disclosed. A barrier retains reactants in an upper chamber during incubation, then, in response to a force, permits reagents to enter a lower chamber containing a matrix for separating agglutination.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: July 14, 1998
    Assignee: Ortho Diagnostic Systems, Inc.
    Inventors: Walter Milchanoski, Milan Jorik, Kathleen J. Reis, Diane E. Bechtold, Linda Davis, Thomas M. Setcavage, Donald M. Davies
  • Dedicated point to point fiber optic interface
    Patent number: 5524218
    Abstract: A system for communicating data between a main processor and a peripheral processor over a fiber optic interface. The interface is a dedicated, point-to-point link operating in full-duplex, asynchronous mode. Dual fibers and physical layer controllers are used in a cascaded fashion to double the throughput of the interface. Frame control logic coordinates formatting of data into frames for transmission over the interface. Frame format and interface protocol are based on FDDI, but are improved to more efficiently transfer data in a point-to-point implementation. Frame Check Sequences are generated and verified to ensure error-free data transfers. Frame sending and frame receiving logic communicate with the main and peripheral processors, accepting data transfer requests and forwarding received data.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: June 4, 1996
    Assignee: Unisys Corporation
    Inventors: Larry L. Byers, Donald M. Davies, Joseba M. Desubijana, Michael E. Mayer, Randall L. Piper, Lloyd E. Thorsbakken, Steven M. Wierdsma
  • Agglutination reaction and separation vessel
    Patent number: 5491067
    Abstract: A vessel for conducting blood cell agglutination assays is disclosed. A barrier retains reactants in an upper chamber during incubation, then, in response to a force, permits reagents to enter a lower chamber containing a matrix for separating agglutination.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: February 13, 1996
    Assignee: Ortho Diagnostic Systems Inc.
    Inventors: Thomas M. Setcavage, Kathleen J. Reis, Donald M. Davies, Edward J. Mazur
  • Particle washing and separation method
    Patent number: 4698311
    Abstract: A device is described for preparing a standardized concentration of washed particles suspended in a fluid. The preferred method is directed to the preparation from whole blood specimens of a standardized concentration of washed red cells in isotonic solution using a device comprising a test tube formed at the bottom end with a nipple-like receptacle having a predetermined volumetric capacity. Whole blood is mixed with isotonic solution in the device which is then centrifuged causing the red cells to be first washed and then packed into the receptacle. The liquid contents of the device are then decanted without disturbing the packed red cells. Thereafter, the red cells are reconstituted to the desired concentration by adding isotonic solution to a predetermined level in the tube and mixing the cells into the isotonic solution.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: October 6, 1987
    Assignee: Ortho Diagnostic Systems Inc.
    Inventors: Shelby J. Hall, David J. Olekna, Donald M. Davies, Jr.