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:
Jun. 09, 1992
Filed:
Jul. 26, 1990
Douglas N Paulson, Del Mar, CA (US);
Matthew Lake, San Diego, CA (US);
Biomagnetic Technologies, Inc., San Diego, CA (US);
Abstract
The operation of a biomagnetometer is verified using a tool containing a dipole source of known strength having a fixed, known position. The tool includes a hollow nonconducting and nonmagnetic sphere filled with an electrically conducting fluid, and at least one well-characterized dipole source within the fluid. The position of the dipole source relative to fixed locations on the surface of the sphere is established by X-ray measurement, and the the fixed surface locations and strength of the dipole source are measured with the biomagnetometer. The position and strength of the dipole source determined in this manner are compared with the known position and strength of the dipole source, to verify the operation of the biomagnetometer.