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:
Oct. 22, 2019
Filed:
Apr. 26, 2011
Seong-gi Baek, Pleasanton, CA (US);
Seong-Gi Baek, Pleasanton, CA (US);
RheoSense, Inc., San Ramon, CA (US);
Abstract
A portable viscometer includes a pump mechanism which cooperates with a positive displacement sample container referred to as a positive displacement pipette, for dispensing, at a known flow rate, a sample of liquid for which viscosity is desired to be determined. The dispensed liquid flows through a flow through miniature viscosity sensor having at least two pressure sensors which measure the pressure drop of the liquid as it flows through a rectangular flow channel, the pressure drop at the known flow rate being proportional to the viscosity. A controller controls operation of the viscometer and processes sensor data, and the resulting measurements of viscosity can be displayed on a display. The positive displacement pipette is removably positioned in the viscometer so that it can be removed from the viscometer when a viscosity test is completed and replaced with another positive displacement pipette containing another liquid to be tested.