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:
Aug. 11, 2020
Filed:
Apr. 14, 2017
Applicant:
Andrew F. Mcdowell, Albuquerque, NM (US);
Inventor:
Andrew F. McDowell, Albuquerque, NM (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 33/3873 (2006.01); G01R 33/38 (2006.01);
U.S. Cl.
CPC ...
G01R 33/3873 (2013.01); G01R 33/3802 (2013.01); G01R 33/3806 (2013.01);
Abstract
Methods and apparatuses for homogenizing or correcting the magnetic fields of magnets, particularly the magnetic fields employed in nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) applications. There are disclosed passive shims for making such homogenizations or corrections, methods for making such shims, and a method and apparatus for creating desirable correction fields in which the correction field strength has limited harmonic content, near continuous value of field strength, and occupies minimal space in the magnet.