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John R Prybella, Terry D Boucher: Condition responsive pump control utilizing integrated, commanded, and sensed flowrate signals. Cobe Laboratories, January 3, 1989: US04795314 (149 worldwide citation)

A pump control apparatus including a variable speed pump controllable in response to a pump drive signal, a signal generator generating a commanded flowrate signal indicating desired flowrate of the pump, a flowrate sensor providing a sensed flowrate signal indicating sensed flowrate of the pump, an ...


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John R Prybella, Susan Roberts, Jose Luyo: Closed method and system for the sampling and testing of fluid. Haemonetics Corporation, June 6, 2006: US07055401 (1 worldwide citation)

A closed fluidic sampling system. The system includes a first port for receiving a sample of fluid and a sampling chamber in fluid communication with the first port. A a one-way valve allows fluid to flow from the first port towards the sampling chamber while preventing backflow of fluid towards the ...


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John R Prybella, Susan Roberts, Jose Luyo: Closed method and system for the sampling and testing of fluid. Haemonetics Corporation, September 15, 2005: US20050199077-A1

A closed fluidic sampling system. The system includes a first port for receiving a sample of fluid and a sampling chamber in fluid communication with the first port. A a one-way valve allows fluid to flow from the first port towards the sampling chamber while preventing backflow of fluid towards the ...