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:
Apr. 30, 1991
Filed:
Oct. 19, 1988
Olaf H Dossel, Tangstedt, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
Apparatus for multi-channel measurement of weak magnetic fields having assigned to each channel an assembly, which is arranged on a base carrier (30) and includes a DC-SQUID (6, 27), a gradiometer coil (8, 12, 15, 16, 37), a coupling-in coil (9, 19, 38), superconductive connecting leads (10, 17, 18, 41), and a modulation coil (7, 26). The gradiometer coil, the coupling-in coil and the SQUID are made from thin-film structures. An evaluation element (11) serves to evaluate the signals generated in each channel by the SQUIDS. A separate plate (29) is provided for each channel, on which the SQUID and the modulation coil are deposited. The assembly of gradiometer coil, connecting leads and coupling-in coil provided for each channel is deposited on a separate gradiometer carrier (12, 32). A plate is arranged on a gradiometer carrier, and the individual gradiometer carriers are attached to the base carrier.