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:
Sep. 28, 1976
Filed:
Mar. 21, 1975
Hitachi Metals, Ltd., , JA;
Abstract
The semihard magnetic alloy of the present invention consists essentially of, by weight, 17 to 45 % chromium, 3 to 14 % cobalt, 0.2 to 5 % silicon and balance substantially iron, preferably 23 to 35 % chromium, 6 to 12 % cobalt, 0.3 to 3 % silicon and balance substantially iron and has a residual magnetic flux density of 7,000 Gauss or more and a coersive force of 100 to 600 Oersted. Said alloy is produced by solution treating an alloy having the above indicated composition at a temperature of 650.degree.C. to 1,300.degree.C., preferably 850.degree.C. to 1,085.degree.C., and then either maintaining the solution-treated alloy at a temperature of not higher than 650.degree.C. for a given period of time and repeatedly aging said alloy in multi-stage at gradually lowered temperatures, or cooling the solution-treated alloy continuously from a temperature of not higher than 700.degree.C. down to at least 550.degree.C. at a rate of not higher than 50.degree.C. per hour.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile