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:
Nov. 03, 1981
Filed:
Feb. 25, 1980
Applicant:
Inventor:
Fraser M Walsh, Arlington, MA (US);
Assignee:
Kor Incorporated, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2323 / ; 2323 / ;
Abstract
A method for the analysis of exhaled carbon dioxide for clinical diagnostic application which contains a mixture of .sup.13 CO.sub.2 and .sup.12 CO.sub.2 is disclosed. The method includes the use of a solution which absorbs the carbon dioxide from the exhaled air, reacts with the carbon dioxide to form a ketone and uses the height of the unique infrared spectral peaks in the carbonyl frequency range to quantitate the .sup.13 CO.sub.2 and the .sup.12 CO.sub.2 components of the exhaled air.