Patent ID: 11913845
Assignee: TEMPTIME CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A temperature indicator comprising:
a first electrical contact;
a second electrical contact;
a first capacitor group comprising:
a first capacitor first conducting surface group comprising a plurality of first capacitor first conducting surfaces, wherein the first capacitor first conducting surfaces comprise a first temperature-dependent component, wherein the first capacitor first conducting surfaces are separated from the first and second electrical contacts;
a first capacitor second conducting surface group comprising a plurality of first capacitor second conducting surfaces, wherein a first component among the first capacitor second conducting surfaces is electrically connected to the first electrical contact and a last component among the first capacitor second conducting surfaces is electrically connected to the second electrical contact; and
a first dielectric formed between the first capacitor first conducting surface group and the first capacitor second conducting surface group;
wherein the first capacitor first conducting surfaces, the first dielectric, and the first capacitor second conducting surfaces form a plurality of first capacitors connected in series; and

a second capacitor group comprising:
a second capacitor first conducting surface group comprising a plurality of second capacitor first conducting surfaces, wherein the second capacitor first conducting surfaces comprise a second temperature-dependent component, wherein the second capacitor first conducting surfaces are separated from the first and second electrical contacts;
a second capacitor second conducting surface group comprising a plurality of second capacitor second conducting surfaces, wherein a first component among the second capacitor second conducting surfaces is electrically connected to the first electrical contact and a last component among the second capacitor second conducting surfaces is electrically connected to the second electrical contact; and
a second dielectric formed between the first capacitor first conducting surface group and the first capacitor second conducting surface group,
wherein the second capacitor first conducting surfaces, the second dielectric, and the second capacitor second conducting surfaces form a plurality of second capacitors connected in series;

wherein the first capacitor group is electrically connected to the second capacitor group,
wherein the first temperature-dependent component is configured to change conductivity when exposed to a temperature above a first threshold temperature,
wherein the second temperature-dependent component is configured to change conductivity when exposed to a temperature above a second threshold temperature, and
wherein the second threshold temperature is different than the first threshold temperature.