Rare earth regenerator material particle, rare earth regenerator material particle group, and cold head, superconducting magnet, examination apparatus, and cryopump using the same

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United States of America Patent

PATENT NO 11692117
APP PUB NO 20210246351A1
SERIAL NO

17240687

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Abstract

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A rare earth regenerator material particle and a regenerator material particle group having a high long-term reliability, and a superconducting magnet, an examination apparatus, a cryopump and the like using the same are provided. A rare earth regenerator material particle contains a rare earth element as a constituent component, and in the particle, a peak indicating a carbon component is detected in a surface region by an X-ray photoelectron spectroscopy analysis.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBAMINATO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fuse, Keiichi Kanagawa, JP 27 96
Yamada, Katsuhiko Kanagawa, JP 90 1001

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