The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 1996
Filed:
Jan. 31, 1994
James E Johnson, Reno, NV (US);
Christopher B Shumate, Reno, NV (US);
Andy W Siu, Reno, NV (US);
Ronald Gundlach, Reno, NV (US);
Hamilton Company, Reno, NV (US);
Abstract
A method and apparatus for solid phase extraction chromatography is disclosed in which the flow rate of a fluid, such as the motive pressurized gas is monitored, adjusted and compared with a standardized pressure curve which is correlative of a sample being processed. By monitoring and adjusting changes in flow rate, which can correspond to process initialization, beginning, ending and key fractionating points, and correlating to a standard, the cycle time for assaying the sample in question can be maximized and multiple samples can pass through analysis automatically and quickly.