Intellectual Discovery, Inc.

Jaehwang Lee

Ji Hoon Park

Gilnam Hong

Hwajung Lee

Jungeun Ahn

Kwanyong Jung

Dongsul Kim

Youngseok Park

Jiyong Park

Seungil Shin

An upper section is formed of a base film. A developing media member is formed of a micro-porous film to be positioned correspondingly to the upper section such that the developing media member is joined with the upper section. A time control section is formed by engraving a movement path of developing media on the developing media member by means of a printer, cutter or the like. At least one or more cutaway sections and a plurality of transparent members are positioned on the time control section, wherein the cutaway sections are positioned at both side surfaces of the time control section corresponding to the movement path so as to temporarily store the developing media, and the transparent members have linear-shaped first display windows so as to display the arrival of the developing media, which indicates the end of the movement of the developing media.

Critical temperature indicator and manufacturing method thereof

Growing community of inventors

Cheongju-si, South Korea

Jaehwang Lee