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:
Aug. 01, 2006
Filed:
Aug. 06, 2004
Robert Gruebler, Graz, AT;
Egon Landschuetzer, Graz, AT;
Wolf-dietrich Steinboeck, Graz, AT;
Roche Diagnostics Operations, Inc., Indianapolis, IN (US);
Abstract
A method of detecting a gas bubble in a measuring chamber filled with a liquid. The electrical conductivity of the liquid or a variable derived therefrom is measured in the measuring chamber at a first pressure value p, and a first measured value Sis detected. The pressure in the measuring chamber is changed, the electrical conductivity of the liquid or a variable depending thereon is measured in the measuring chamber at at least a second pressure value p, and a second measured value Sis detected. The presence or lack of presence of at least one gas bubble in the liquid is detected by comparing the first measured value Sto the second measured value S.