3830224 is referenced by 70 patents and cites 7 patents.

Liquid crystals which have the property of changing color in response to temperature variations are contained in packages and are carried by an article of clothing. These packages sense the temperature of the skin at a control area and at an area that is related to the reproductive system. The gradient of the temperatures between these two areas is then used to determine the existence of a physiological change.

Title
Means for detecting changes in the temperature of the skin
Application Number
05/316,641
Publication Number
3830224
Application Date
December 19, 1972
Publication Date
August 20, 1974
Inventor
Dostoomian Ashod S
Vanzetti Riccardo
Agent
Seidel Gonda & Goldhammer
IPC
A61b 06/10
G01n 31/22
G01k 11/16
G01K 11/16
G01K 13/00
G01K 11/00
A61B 05/00
View Original Source