Visual indicating device for bad breath

Details Visual indicating device for bad breath Visual indicating device for bad breath

2003-10-16

2008-08-19

Nasser, Jr., Robert L. (Department: 3735)

Surgery

Diagnostic testing

Respiratory

C600S300000

Reexamination Certificate

active

07413550

ABSTRACT:
The invention provides a breath testing device which includes a visual indicating agent which changes color in the presence of an odor associated with bad breath, such as sulfur and ammonia odors. An example of the visual indicating agent is 4,4′-bis(dimethylamino)-benzhydrol (Michler's hydrol or BDMB) and related dyes having a similar chemical structure. The indicating agent is applied to a substrate which is then inserted into a tube or straw, or which covers one end of a straw. When a user with bad breath blows into the tube or straw, the indicating agent will change color. The breath testing devices provide a quick and affordable means for a user to test their breath, and they may be packaged in discreet, pocket-sized dispensers which can be carried in a pocket or purse.

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