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. 06, 2009
Filed:
Jun. 13, 2002
David W. Neyer, Castro Valley, CA (US);
Phillip H. Paul, Livermore, CA (US);
Don Wesley Arnold, Livermore, CA (US);
Christopher G. Bailey, Pleasanton, CA (US);
David W. Neyer, Castro Valley, CA (US);
Phillip H. Paul, Livermore, CA (US);
Don Wesley Arnold, Livermore, CA (US);
Christopher G. Bailey, Pleasanton, CA (US);
Eksigent Technologies, LLC, Dublin, CA (US);
Abstract
A flow controller which uses a combination of hydrostatic pressure and electroosmotic flow to control the flow of a fluid. A driving fluid () whose flow rate is dependent on both hydrostatic pressures and electroosmotic flow can be used (a) directly as a working fluid in an operable device, for example a chromatograph, or (b) to displace a working fluid () from a storage container () into an operable device (), or both (a) and (b). The driving fluid () can be composed of one or more fluids. Part or all the driving fluid () is passed through an electroosmotic device () so as to increase or decrease the flow rate induced by hydrostatic pressure.