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:
Feb. 13, 1996
Filed:
May. 14, 1993
Applicant:
Inventors:
Frederick C Wellstood, College Park, MD (US);
Anna Mathai, University Park, MD (US);
Dian Song, Greenbelt, MD (US);
Randall C Black, Seabrook, MD (US);
Assignee:
University of Maryland, College Park, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01N / ;
U.S. Cl.
CPC ...
324248 ; 324201 ; 324224 ; 324235 ; 324239 ; 324262 ; 505162 ; 505846 ;
Abstract
A magnetic flux microscope that measures the magnetic field about a sample surface. The apparatus uses a thin-film superconducting quantum interference device (SQUID) as the scanning device. Magnetic shielding is provided about the SQUID and is held stationary relative to the SQUID. The apparatus and method provides a very high magnetic image of the sample with a very high spatial and field resolution.