Chromatic Technologies, Inc.

Abraha, Medhanei

Owen, Timothy, J.

Wang, Ruizheng

Du, Yu

Small, Lyle

Clayton, Terrill Scott

Medhanei Abraha

Ruizheng Wang

Yu Du

Timothy J Owen

Lyle D Small

Terrill Scott Clayton

Ross Haugberg

A temperature sensor, and methods of making and using such a temperature sensor, whereby the temperature sensor includes a reversible thermochromic color-changing system having a dye, a developer, and a solvent. Upon exposure to a preselected temperature threshold, association or disassociation of the dye and the developer results in a visible color change. Further, the color-changing system includes a color-memory property which facilitates retention of the color change to effectively record exposure to the temperature threshold.

Thermochromic temperature sensor

A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.

Yellow thermochromic dyes, inks composition and level indicators

A red leuco dye demonstrates unusually good thermal and photo stability. The red dye may be used with developers and wax carries for microencapsulation to form thermochromic pigments for use in inks, coatings and the like. This pigment is particularly desirable for use in metal-deco coatings, such as those used in aluminum cans in high beverage canning operations.

Red thermochromic dyes and their ink compositions

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Colorado Springs, CO, United States of America

Medhanei Abraha