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. 06, 1978
Filed:
Nov. 01, 1976
Masao Iwata, Chichibu, JA;
Hisao Yoshizawa, Kumagaya, JA;
Hitachi Metals, Ltd., , JA;
Abstract
The thermo-magnetic-treated anisotropic permanent magnet alloy of the present invention consists essentially of, by weight, 17 to 45% chromium, 3 to 14.5% cobalt, 0.2 to 5% silicon and balance substantially iron, preferably 23 to 35% chromium, 7 to 14.5% of cobalt, 0.3 to 3% silicon and balance substantially iron and has a residual magnetic flux density of 7000 Gauss or more and a coersive force of 300 Oersted or more. In order to obtain the alloy, an alloy having the above identified composition is initially aged at a temperature of 570.degree. C to 670.degree. C for a period of 10 minutes to 5 hours in a magnetic field and secondarily aged at a temperature within 200.degree. C below the thermo-magnetic treatment temperature for a period of 30 minutes to 50 hours.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile