05756356 is referenced by 44 patents and cites 20 patents.

A method of indicating a time or a temperature-time accumulated value as a color change (degree of color development), which comprises providing an oxidation-polymerizable dyestuff and the oxidizing agent in a non-contact state and bringing the oxidation-polymerizable dyestuff and the oxidizing agent into contact with each other to polymerize the oxidation-polymerizable dyestuff with the passage of time, and an indicator material therefor.

Title
Method of indicating time or temperature-time accumulated value as color change, and materials therefor
Application Number
8/622140
Publication Number
5756356
Application Date
March 27, 1996
Publication Date
May 26, 1998
Inventor
Keiichi Sato
Tokyo
JP
Hideyuki Ishiguro
Tokyo
JP
Makoto Dohi
Tokyo
JP
Masato Yanagi
Tokyo
JP
Agent
Wenderoth Lind & Ponack
Assignee
Toyo Ink Manufacturing
JP
IPC
G01K 3/00
G01N 21/00
G01N 31/00
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