Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Richard W. Andrews0
Hal Richardson0
Date of Patent
July 8, 2008
0Patent Application Number
109111110
Date Filed
August 4, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Gradient performance with high pressure gradient solvent delivery system is optimized by approximation of infinite stroke volume of high pressure pumps by the addition of pulse dampening with backflow prevention to each high pressure pump. The backflow prevention adds sufficient minimum flow resistance, thereby enhancing the performance of the pulse dampening over a wider range of flow rates resulting in consistent gradient performance.
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