1
Carlos M Rodriguez, Wallace H Coulter: Multi-part differential analyzing apparatus utilizing light scatter techniques. Coulter Electronics, Carl Fissell Jr, Gerald R Hibnick, June 30, 1992: US05125737 (110 worldwide citation)

Disclosed is a flow through particle analyzing cell differentiating apparatus for optical and electronic measurements on a stream of particles in which a hydrodynamically focoussed stream is passed into and through a point focussed beam of radiated energy whereby the beam is scattered by the stream ...


2
Wallace H Coulter, William F Rothermel: Method and apparatus for transporting carriers of sealed sample tubes and mixing the samples. Coulter Electronics, Gerald R Hibnick, September 2, 1986: US04609017 (87 worldwide citation)

A plurality of sealed blood sample tubes are housed in a rack and a plurality of these racks are vertically stacked, with the sample tubes lying horizontally. The racks are successively deposited onto a horizontal conveyor belt which is housed in and moves longitudinally on a table that rocks around ...


3
Wallace H Coulter, Charles R Shambaugh: Closed vial transfer method and system. Coulter Corporation, Mitchell E Alter, August 5, 1997: US05653686 (83 worldwide citation)

A method and transfer device for transferring fluids between closed vials. The transfer device includes a cylinder having a pair of opposing open tubes or tubular portions into which a pair of vials can be inserted to transfer fluid therebetween. The tubes are separated by a wall through which exten ...


4
William F Rothermel, John P Matthews, James W Walker, Wallace H Coulter: Cassette for supporting test tubes of different diameters and/or lengths. Coulter Electronics, Stephen A Roen, Gerald R Hibnick, August 13, 1985: US04534465 (78 worldwide citation)

A stackable cassette or rack for supporting a plurality of sealed sample containers having different diameters and/or lengths and transporting the same to a testing station of a hematology analyzer device. The cassette comprises a body having a top and a bottom and a rear portion, and the body inclu ...


5
Ernesto Bello, Steven N Kolber, Wallace H Coulter: Level sensor apparatus and method. Coulter Electronics, Silverman Cass & Singer, April 27, 1982: US04326851 (68 worldwide citation)

A level sensor of a fluid transfer mechanism for determining when the bottom tip of a fluid aspirating probe touches or contacts the top surface of a sample fluid. The level sensor senses the contact capacitively by grounding one plate of a capacitor through the sample fluid and fluid aspirating pro ...


6
Hogg Walter R, Gerhard A Liedholz, Wallace H Coulter: Electrical sensing circuitry for particle analyzing device. Coulter Electronics, Silverman & Cass, March 16, 1976: US03944917 (40 worldwide citation)

The electrical sensing circuitry includes a power supply and a signal-detecting circuit which are coupled through the resistance of an electrolyte in a liquid in an aperture of a particle-analyzing device between sensing electrodes positioned on either side of the aperture. The liquid containing an ...


7
Wallace H Coulter, Robert K Zwerner, Robert J Schmittling, Thomas R Russell: Method of positive or negative selection of a population or subpopulation of a sample utilizing particles and gravity sedimentation. Coulter Corporation, John T Winburn, Warren W Kurz, November 19, 1996: US05576185 (39 worldwide citation)

A separation procedure for separating a selected desired or undesired population from a biological sample utilizing relatively heavy, dense particles and gravity sedimentation. The particles have one or more reactants bound thereto which are specific to and will bind with the selected population. Th ...


8
Wallace H Coulter, Walter M Mena: Fluid transfer apparatus. Coulter Electronics, Silverman Cass & Singer, April 20, 1982: US04325909 (37 worldwide citation)

A vertically and horizontally movable arm structure for fluid transfer is provided with a tubular member for linear oscillation of a holder for a fluid probe; the tubular member can additionally form a conduit for lead wire connected to the fluid probe. Sensors for the vertical position of the arm a ...


9
Wallace H Coulter, John D Hollinger, Thomas Russell, Carlos Rodriguez, Ronald Paul: Method and apparatus for rapid mixing of small volumes for enhancing biological reactions. Coulter Corporation, John T Winburn, August 24, 1993: US05238812 (33 worldwide citation)

A method and apparatus for accelerating at least one definitive biological reaction including increasing the accuracy of determinations made therefrom. The reaction involves selected viable biological cells which are prepared in a small sample volume and rapidly mixed with microspheres having antibo ...


10
Robert F Brunhouse, Constance M Hajek, Thomas Russell, Wallace H Coulter: Method and apparatus for obtaining an absolute white blood cell subset count and white blood cell multipart differential. Coulter Corporation, John T Winburn, September 20, 1994: US05348859 (30 worldwide citation)

An optical screening method and apparatus for identifying and counting cells expressing selected characteristics or properties. The cells are combined with one or more different sets of microspheres, each set having a reactant bound thereto which will bind to a specific molecule which can exist on o ...