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:
Nov. 26, 1996
Filed:
Sep. 19, 1994
Applicant:
Inventors:
Anthony J Salloway, Northamptonshire, GB;
David J Gilderdale, South Devon, GB;
Assignee:
GEC-Marconi Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
1286532 ; 1286535 ; 324318 ; 381 71 ; 381 94 ;
Abstract
In a magnetic resonance apparatus including an active noise reduction arrangement (9, 49, 51, 53) for use by a patient (5) undergoing examination in the apparatus the transducers (25, 31) of the arrangement are non-magnetic, e.g. are of the electret, piezoelectric or condenser type, and have no parts of ferromagnetic material.