Method for preserving leuco chromogen-containing aqueous solution

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United States of America Patent

PATENT NO 12049566
APP PUB NO 20190177548A1
SERIAL NO

16320343

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Abstract

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The present invention provides a method for preserving a leuco chromogen-containing aqueous solution comprising: adding at least one acid compound selected from the group consisting of a phosphoric acid compound, a carboxylic acid compound, a sulfonic acid compound, and a sulfuric acid compound to a leuco chromogen-containing aqueous solution; a method for stabilizing a leuco chromogen in an aqueous solution comprising: adding at least one acid compound selected from the group consisting of a phosphoric acid compound, a carboxylic acid compound, a sulfonic acid compound, and a sulfuric acid compound to a leuco chromogen-containing aqueous solution; and a liquid reagent comprising a leuco chromogen and at least one acid compound selected from the group consisting of a phosphoric acid compound, a carboxylic acid compound, a sulfonic acid compound, and a sulfuric acid compound.

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Patent Owner(s)

Patent OwnerAddress
HITACHI CHEMICAL DIAGNOSTICS SYSTEMS CO LTDCHUO-KU TOKYO 104-6004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Katayama, Yuki Sunto-gun, JP 28 56
Soya, Haruyo Sunto-gun, JP 9 14

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