The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2009
Filed:
Oct. 16, 2003
Rameshbabu Boga, Roswell, GA (US);
John Gavin Macdonald, Decatur, GA (US);
RameshBabu Boga, Roswell, GA (US);
John Gavin MacDonald, Decatur, GA (US);
Kimberly-Clark Worldride, Inc., Neenah, WI (US);
Abstract
The invention provides a breath testing device which visually indicates the presence of ammonia in a patient's breath, in particular ammonia fromurease infection. The breath testing device comprises a visual indicating agent which changes color in response to ammonia odors, such as 4,4'-bis(dimethylamino)-benzhydrol (Michler's hydrol or BDMB), pararosaniline base and alpha-naphtholbenzein. The indicating agent is applied to a substrate which is then inserted into a tube or straw, which can be attached to the inlet of a breath collection balloon. When the patient blows into the tube or straw, the indicating agent will change color if it detects levels of ammonia which are consistent withurease infection.