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:
Jul. 23, 1996
Filed:
Jun. 06, 1995
Ryusuke Hasegawa, Morristown, NJ (US);
Ronald Martis, East Hanover, NJ (US);
AlliedSignal Inc., Morris Township, NJ (US);
Abstract
A glassy metal alloy consists essentially of the formula Co.sub.a Fe.sub.b Ni.sub.c M.sub.d B.sub.e Si.sub.f C.sub.g, where M is selected from molybdenum and chromium and 'a', 'b', 'c', 'd', 'e', 'f' and 'g' are in atom percent, 'a' ranges from about 40 to about 43, 'b' ranges from about 35 to about 42 and 'c' ranges from 0 to about 5, 'd' ranges from 0 to about 3, 'e' ranges from about 10 to about 25, 'f' ranges from 0 to about 15 and 'g' ranges from 0 to about 2. The alloy can be cast by rapid solidification into ribbon, annealed to enhance magnetic properties thereof, and formed into a marker that is especially suited for use in magneto-mechanically actuated article surveillance systems. Advantageously, the marker is characterized by relatively linear magnetization response in the frequency regime wherein harmonic marker systems operate magnetically. Voltage amplitudes detected for the marker are high, and interference between surveillance systems based on mechanical resonance and harmonic re-radiance is virtually eliminated.