Accumulated thermal exposure responder and method of use

Details Accumulated thermal exposure responder and method of use Accumulated thermal exposure responder and method of use

1984-02-21

1985-08-06

Turk, Arnold

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

116207, 206219, 206222, 374102, 422 55, 422 58, 422 61, 426 88, 436 7, 436147, 436164, G01N 2178, G01N 2182

Patent

active

045336407

ABSTRACT:
An adjustable accumulated thermal exposure indicator device, and method of use, for affixing to and indicating deterioration of perishable goods and the like, comprising (1) a reactant yielding material that reacts via one or more steps at a rate depending on time, temperature, and pH to provide an amine and (2) an indicator that reacts at a time, temperature, concentration and pH dependent rate with the amine to produce a visible reaction that is indicative of the expiration of a predetermined time-temperature history related to the useful life of the goods to which the device is affixed. Also provided is a device or article that is responsive to accumulated thermal exposure for the controlled release of immobilized alcohols and amines.

REFERENCES:
patent: 2787269 (1957-04-01), Cohen
patent: 2798855 (1957-07-01), Hainsworth
patent: 3344914 (1967-10-01), Bloom et al.
patent: 3576604 (1971-04-01), Hammond
patent: 3603469 (1971-09-01), Magni
patent: 3968872 (1976-07-01), Cavazza
patent: 3996007 (1976-12-01), Fang et al.
patent: 4066567 (1978-01-01), Labes
patent: 4138357 (1979-02-01), Igarashi
patent: 4151748 (1979-05-01), Baum
patent: 4273674 (1981-06-01), Ligon, Jr. et al.
Su et al., Journal of Organic Chemistry, vol. 34, pp. 926-929 (1969).
Morawetz et al., J. Am. Chem. Soc., vol. 84, p. 3783 (1962).

Affiliated with

Also associated with

Rating

Accumulated thermal exposure responder and method of use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Accumulated thermal exposure responder and method of use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accumulated thermal exposure responder and method of use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-512671