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:
Jul. 08, 2003
Filed:
Apr. 27, 2001
Applicant:
Inventor:
Michael B. Schell, Santa Barbara, CA (US);
Assignee:
Edwards Systems Technology, Inc., Cheshire, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 1/22 ;
U.S. Cl.
CPC ...
G01N 1/22 ;
Abstract
An automatic calibration mode for a carbon dioxide sensor is based on using a zero gas. The sensor is designed to recognize a distinctive rate of change pattern of carbon dioxide concentrations that would be indicative of a zero calibration routine. This approach can be used for other infrared sensors.