Temperature sensitive device for medicine containers

Thermal measuring and testing – Temperature measurement – Nonelectrical – nonmagnetic – or nonmechanical temperature...

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374162, 116217, G01K 1106

Patent

active

057793646

ABSTRACT:
A temperature indicator utilizing waxes, low-temperature melt metals or polymers attached to a support member that will melt to reveal a visible indicia on the support member thereby serving as an indicator that the product container to which the invention is attached has been heated beyond a predetermined stable temperature of the product.

REFERENCES:
patent: 639350 (1899-12-01), Brown
patent: 1535536 (1925-04-01), MacDonald
patent: 3047405 (1962-07-01), Lanier
patent: 3963442 (1976-06-01), Bullard et al.
patent: 4148748 (1979-04-01), Hanlon et al.
patent: 4390291 (1983-06-01), Graven, Jr. et al.
patent: 4826762 (1989-05-01), Klibanov et al.

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