logo

For the Inventor, By the Inventor

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.:

US 9829432 B1

PDFFull Text
Expired
Date of Patent:
Nov. 28, 2017

Filed:

Sep. 09, 2016

Gas measuring apparatus

Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Inventors:

Akira Maekawa, Kamakura, JP;

Miyuki Kusaba, Meguro, JP;

Shigeyuki Takagi, Fujisawa, JP;

Hiroshi Hasegawa, Yokosuka, JP;

Tsutomu Kakuno, Fujisawa, JP;

Yasutomo Shiomi, Koza, JP;

Assignee:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Kiho Kim

Int. Cl.
CPC ...
G01J 5/02 (2006.01); G01N 21/3504 (2014.01); G01N 21/39 (2006.01); G01N 33/497 (2006.01); H01S 5/343 (2006.01); G01N 21/05 (2006.01); H01S 5/125 (2006.01); H01S 5/34 (2006.01); A61B 5/00 (2006.01); A61B 5/08 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3504 (2013.01); A61B 5/00 (2013.01); A61B 5/0059 (2013.01); A61B 5/082 (2013.01); G01N 21/05 (2013.01); G01N 21/39 (2013.01); G01N 33/497 (2013.01); H01S 5/125 (2013.01); H01S 5/3401 (2013.01); H01S 5/343 (2013.01); H01S 5/34313 (2013.01); H01S 5/34346 (2013.01); G01N 33/004 (2013.01); G01N 2021/399 (2013.01); G01N 2201/12 (2013.01);
Abstract

A gas measuring apparatus includes a cell portion, a light source portion, a detection portion, and a control portion. The cell portion includes a space into which a sample gas containing breath containing a first isotope of carbon dioxide and a second isotope of carbon dioxide is introduced. The light source portion changes a wavelength of the light in a band of 4.345 μm or more and 4.384 μm or less. The detection portion performs an operation including first detection of an intensity of the light passing through the space and second detection of an intensity of the light passing through the space into which the sample gas is not introduced. The control portion calculates a ratio of an amount of the second isotope to an amount of the first isotope based on a result of the first detection and a result of the second detection.

Find Patent Forward Citations

Maekawa, Akira. (2017). Gas measuring apparatus (U.S. Patent No. 9829432). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9829432

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…