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:
Feb. 17, 2009
Filed:
Mar. 31, 2006
Ryan T. Kelly, West Richland, WA (US);
Jason S. Page, Kennewick, WA (US);
Keqi Tang, Richland, WA (US);
Richard D. Smith, Richland, WA (US);
Ryan T. Kelly, West Richland, WA (US);
Jason S. Page, Kennewick, WA (US);
Keqi Tang, Richland, WA (US);
Richard D. Smith, Richland, WA (US);
Battelle Memorial Institute, Richland, WA (US);
Abstract
Methods of forming electrospray ionization emitter tips are disclosed herein. In one embodiment, an end portion of a capillary tube can be immersed into an etchant, wherein the etchant forms a concave meniscus on the outer surface of the capillary. Variable etching rates in the meniscus can cause an external taper to form. While etching the outer surface of the capillary wall, a fluid can be flowed through the interior of the capillary tube. Etching continues until the immersed portion of the capillary tube is completely etched away.