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.

Date of Patent:
Aug. 24, 2021

Filed:

Oct. 25, 2019
Applicant:

Sri International, Menlo Park, CA (US);

Inventors:

Ashish Chaudhary, Safety Harbor, FL (US);

Robert Timothy Short, St. Petersburg, FL (US);

Assignee:

SRI International, Menlo Park, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 21/30 (2006.01); H01J 41/02 (2006.01); G01N 27/64 (2006.01); G01L 21/34 (2006.01); G01L 21/32 (2006.01); G01L 21/12 (2006.01); G01L 9/00 (2006.01); G01L 19/00 (2006.01); H01J 41/06 (2006.01); H01J 41/04 (2006.01);
U.S. Cl.
CPC ...
H01J 41/02 (2013.01); G01L 9/0072 (2013.01); G01L 19/0007 (2013.01); G01L 21/12 (2013.01); G01L 21/30 (2013.01); G01L 21/32 (2013.01); G01L 21/34 (2013.01); G01N 27/64 (2013.01); H01J 41/04 (2013.01); H01J 41/06 (2013.01);
Abstract

The disclosure includes an ionization chamber, a first electron multiplier, and a second electron multiplier. The ionization chamber is configured to receive gas molecules from an environment at a pressure. The first electron multiplier is configured to receive a plurality of photons from a photon source, generate a first plurality of electrons from the plurality of photons, and discharge the first plurality of electrons into the ionization chamber to generate a plurality of gas ions from at least a portion of the gas molecules. The second electron multiplier is configured to receive the plurality of gas ions from the ionization chamber and generate a second plurality of electrons from the plurality of gas ions that is proportional to a quantity of the plurality of gas ions. A quantity of electrons of the second plurality of electrons is indicative of the pressure.


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