1
Masato Yanagi, Makoto Dohi, Hideyuki Ishiguro, Keiichi Sato: Method of indicating time or temperature-time accumulated value as color change, and materials therefor. Toyo Ink Manufacturing, Wenderoth Lind & Ponack, May 26, 1998: US05756356 (44 worldwide citation)

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 agen ...


2
Yanagi Masato, Dohi Makoto, Ishiguro Hideyuki, Sato Keiichi: Method of indicating time or temperature-time accumulated value as color change, and materials therefor. Toyo Ink Mfg Co, October 2, 1996: EP0735368-A1 (8 worldwide citation)

A method of indicating a time or a temperature-time accumulated value as a color change, which comprises providing an agent A and an agent B in a non-contact state, wherein one of agent A and agent B is an oxidation-polymerizable dyestuff and the other is an oxidizing agent, and bringing the agent A ...



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