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. 06, 1986
Filed:
Mar. 02, 1984
Applicant:
Inventor:
John R Laudermilch, Foster City, CA (US);
Assignee:
Varian Associates, Inc., Palo Alto, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324318 ;
Abstract
An NMR system for obtaining high resolution spectroscopic measurements at a selected temperature includes gradient correcting means disposed in proximity to an NMR probe, for imposing desired gradients on the volume occupied by the sample within the probe. A heat exchange gas is impelled through a heat exchanger and then surrounds the sample to bring the sample to the desired temperature. A thermal barrier, inocuous to RF excitation and of relatively low magnetic susceptibility protects the gradient correcting means from drift due to heat exchange with the heat exchanging gas.