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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 4747924 B1

PDFFull Text
Date of Patent:
May. 31, 1988

Filed:

Apr. 08, 1987

Apparatus for producing neodymium-iron alloy

Applicant:
Inventors:

Katsuhisa Itoh, Nagoya, JP;

Yoshiaki Watanabe, Nagoya, JP;

Eiji Nakamura, Aichi, JP;

Masayasu Toyoshima, Nagoya, JP;

Assignee:

Sumitomo Light Metal Industries, Ltd., Tokyo, JP;

Attorney:

Parkhurst & Oliff

Primary Examiner:

Donald R Valentine

Int. Cl.
CPC ...
C25D / ; C25C / ; C25C / ;
U.S. Cl.
CPC ...
204225 ; 204245 ; 204246 ; 204284 ; 204292 ; 204294 ;
Abstract

A process and an apparatus for producing a neodymium-iron alloy by electrolytic reduction of neodymium fluoride in a bath of molten electrolyte, consisting essentially of 35-76% by weight of neodymium fluoride, 20-60% by weight of lithium fluoride, up to 40% by weight of barium fluoride and up to 20% by weight of calcium fluoride, conducted between one or more iron cathode and one or more carbon anode. The apparatus comprises an electrowinning cell of refractory materials coated inside with a lining resistive to the bath, the carbon anode of constant transverse cross-sectional shape over its length, immersed into the electrolyte bath at its free end, the iron cathode of constant transverse cross-sectional shape over its length, immersed into the electrolytic bath at its free end, a receiver placed on the bottom of the cell for collecting the produced neodymium-iron alloy in a liquid state on the tip of the iron cathode, siphoning means for withdrawing the molten alloy pooled in the receiver out of the cell, and feeding means for feeding the ever wearing iron cathode into the electrolyte bath so as to apply the direct current to the iron cathode with a predetermined current density.

Find Patent Forward Citations

Itoh, Katsuhisa. (1988). Apparatus for producing neodymium-iron alloy (U.S. Patent No. 4747924). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4747924

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

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