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:
May. 14, 2024
Filed:
Nov. 04, 2021
Applicant:
Thermo Finnigan Llc, SanJose, CA (US);
Inventors:
Raman Mathur, Mountain View, CA (US);
Thi Le, San Jose, CA (US);
David E. Minkler, Campbell, CA (US);
Assignee:
Thermo Finnigan LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 30/00 (2006.01); G01N 30/72 (2006.01); H01J 49/04 (2006.01);
U.S. Cl.
CPC ...
G01N 30/7233 (2013.01); H01J 49/0431 (2013.01);
Abstract
Determining a level of a liquid in a container is described. In one aspect, a container includes a calibrant liquid used for calibrating a mass spectrometer. A conductive layer is placed to float upon the calibrant liquid, and a circuit board with electrodes is arranged around the container. A controller circuit then drives and measures various electrodes to first identify which two electrodes the level of the calibrant liquid is between, and then subsequently identify a more precise location for the level between the two electrodes.