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:
Mar. 21, 1989
Filed:
Jan. 02, 1987
Applicant:
Inventors:
Masaaki Tokunaga, Fukaya, JP;
Hiroshi Kogure, Fukaya, JP;
Noriaki Meguro, Kumagaya, JP;
Chitoshi Hagi, Kumagaya, JP;
Assignee:
Hitachi Metals, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
419 12 ; 419 25 ; 419 29 ; 419 54 ; 419 55 ; 148104 ;
Abstract
A thermally stable permanent magnet with reduced irreversible loss of flux and improved intrinsic coercivity iHc of 15KOe or more having the following composition:
Tokunaga, Masaaki. (1989). Permanent magnet having good thermal stability and method for (U.S. Patent No. 4814139). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4814139
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile