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:
May. 28, 2002
Filed:
Nov. 05, 1999
Matthew H. Commens, Morgan Hill, CA (US);
Justine Y. Lee, Mountain View, CA (US);
Varian, Inc., Palo Alto, CA (US);
Abstract
Flow cells and stationary-sample vessels (test tubes) are used sequentially in the same dual-function nuclear magnetic resonance (NMR) probe. The user can easily convert the probe between flow and stationary-sample configurations without removing the probe housing. Tapered guiding surfaces are provided for guiding stationary-sample vessels from above and flow cells from below to respective measurement positions. Sample flow connection tubing used during flow measurements is accommodated within the probe during stationary-sample measurements. The dual-function NMR probe is useful in continuous flow-through, stop-flow, and fixed-sample analysis applications, including applications that couple high-pressure liquid chromatography (HPLC) with nuclear magnetic resonance spectroscopy and applications for analyzing small quantities of stationary organic samples.