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:
Jun. 20, 1978
Filed:
Jun. 10, 1977
Applicant:
Inventor:
Jacob Y Wong, Framingham, MA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250373 ;
Abstract
The concentration of oxygen in the presence of water vapor and other gases is measured without production of harmful levels of ozone by alternately passing ultraviolet light of two wavelengths through a sample, one of the wavelengths being strongly absorbed by oxygen and the other being weakly absorbed, and excluding light outside of these wavelengths.