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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.:

US 10056188 B1

PDFFull Text
Date of Patent:
Aug. 21, 2018

Filed:

Jan. 26, 2012

Producing method of r-t-b-based sintered magnet

Applicants:

Mitsuaki Mochizuki, Saitama, JP;

Shoji Nakayama, Saitama, JP;

Kazuhiro Sonoda, Saitama, JP;

Inventors:

Mitsuaki Mochizuki, Saitama, JP;

Shoji Nakayama, Saitama, JP;

Kazuhiro Sonoda, Saitama, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Kratz, Quintos & Hanson, LLP

Primary Examiner:

Scott R Kastler

Assistant Examiner:

Vanessa T Luk

Int. Cl.
CPC ...
B22F 3/12 (2006.01); B22F 3/16 (2006.01); H01F 1/057 (2006.01); H01F 41/02 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/10 (2006.01); C22C 38/16 (2006.01); C22C 1/02 (2006.01); B22F 9/04 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0246 (2013.01); C22C 1/02 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/06 (2013.01); C22C 38/10 (2013.01); C22C 38/16 (2013.01); H01F 1/0571 (2013.01); H01F 41/0266 (2013.01); B22F 2009/044 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); H01F 1/0577 (2013.01);
Abstract

The present invention provides a producing method of R-T-B-based sintered magnets in which, the recovery chamberincludes inert gas introducing means, evacuating means, a carry-in port, a discharge port, and a recovery container. The recovery step includes a carrying-in step of conveying a processing containerinto the recovery chamber, a discharging step of discharging coarsely pulverized powder in the processing containerinto the recovery chamber, a gas introducing step of introducing inert gas into the recovery chamber, and an alloy accommodating step of recovering the coarsely pulverized powder into the recovery container. Addition of pulverization aid is carried out in the alloy accommodating step. A remaining amount of coarsely pulverized powder in the recovery chamber, an oxygen-containing amount of the R-T-B-based sintered magnet is reduced, and magnetic properties are enhanced.

Find Patent Forward Citations

Mochizuki, Mitsuaki. (2018). Producing method of r-t-b-based sintered magnet (U.S. Patent No. 10056188). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10056188

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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