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:
Apr. 20, 1999
Filed:
Jul. 26, 1996
Seymour Lowell, Lake Worth, FL (US);
Quantachrome Corporation, Boynton Beach, FL (US);
Abstract
An adsorption and desorption analyzer for performing analyses on samples comprises a manifold for selectively storing one or two gases or vapors having different critical temperatures, at least two cells constructed and arranged to store a sample for analysis, a supply line having an isolation valve connecting each cell to the manifold, an absolute pressure transducer for monitoring the pressure in the manifold, vacuum means, a microprocessor for controlling the operation of the isolation valves and the application of gas or vapor or vacuum to the manifold and a coupling line having a differential pressure transducer having a smaller range than the range of the absolute pressure transducer, enables an operator to determine data points for characteristics of the samples under study more precisely and more rapidly than is possible using an analyzer having an identical absolute pressure transducer for each cell to determine the characteristics of the samples stored in the cells. The analyzer is also constructed and arranged to determine the characteristics of additional samples in addition to the first pair of samples compared.