Fluorescent rare earth complex and security medium using the same

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United States of America Patent

PATENT NO 12122950
APP PUB NO 20230303919A1
SERIAL NO

18326054

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Abstract

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The embodiments provide a fluorescent rare earth complex having strong emission intensity and excellent durability, and also provide a security medium using the complex. The rare earth complex according to the embodiment comprises a rare earth ion, a diphosphine dioxide ligand and a β-diketone ligand wherein two phosphorus atoms contained in the diphosphine dioxide ligand individually have substituents different from each other.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBAKANAGAWA KANAGAWA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwanaga, Hiroki Yokohama, JP 44 527
Miyazaki, Kenji Komae, JP 80 470

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