Perishable good integrity indicator

Details Perishable good integrity indicator Perishable good integrity indicator

1993-12-27

1995-08-15

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Measuring or testing

377 25, 327141, H03K 400

Patent

active

054426693

ABSTRACT:
A perishable good integrity indicator includes a first oscillator for outputting a first clock signal which does not substantially vary in response to temperature. A second oscillator outputs a second clock temperature which varies as a function of temperature. A counter counts the pulses of the second clock signal during a time period determined by the first clock and outputs a count value. A data table receives the count value, translates the count value into a time temperature value representing the relationship of time and temperature during the time period and outputs the time temperature value to an adder. The adder adds the time temperature values output by the data table over time and outputs a cumulative time temperature value corresponding to shelf life for a product.

REFERENCES:
patent: 4150573 (1979-04-01), Iinuma et al.
patent: 4385230 (1983-05-01), Danielsen
patent: 4644481 (1987-02-01), Wada
patent: 4658407 (1987-04-01), Iwama
patent: 5323436 (1994-06-01), Lee

Affiliated with

Also associated with

Rating

Perishable good integrity indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perishable good integrity indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perishable good integrity indicator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2188979