Method for preserving aqueous solution containing leuco chromogen

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United States of America Patent

PATENT NO 9493433
APP PUB NO 20130123491A1
SERIAL NO

13811925

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Abstract

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Described is a method for preserving an aqueous solution comprising a leuco chromogen, comprising adding at least one compound selected from the group consisting of polyoxyethylene alkylamine and polyoxyethylene alkenylamine to the aqueous solution containing a leuco chromogen, and a method for stabilizing a leuco chromogen, comprising allowing the leuco chromogen to coexist in an aqueous solution comprising at least one compound selected from the group consisting of polyoxyethylene alkylamine and polyoxyethylene alkenylamine.

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Patent Owner(s)

Patent OwnerAddress
KYOWA MEDEX CO LTDCHUO-KU TOKYO 104-6004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsushita, Masashi Sunto-gun, JP 15 66
Murakami, Tomomi Sunto-gun, JP 34 484
Ohsugi, Yu Sunto-gun, JP 3 11
Soya, Haruyo Sunto-gun, JP 9 14
Tsunoda, Haruki Sunto-gun, JP 4 15
Yoda, Ayako Sunto-gun, JP 3 11

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