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. 03, 2021
Filed:
Jun. 06, 2019
Trajan Scientific Australia Pty Ltd., Ringwood, AU;
Kyle John James Bachus, Adelaide, AU;
Herbert Tze Cheung Foo, Ringwood, AU;
Heike Ebendorff-Heidepriem, Adelaide, AU;
Yvonne Marie Stokes, Adelaide, AU;
Josef Adam Giddings, Adelaide, AU;
Trajan Scientific Australia Pty Ltd, Ringwood, AU;
Abstract
A method of forming a capillary tube for electrospray ionization (ESI) having at least one tip with a desired tip profile. The method includes providing a pre-finished capillary tube of substantially homogenous material. The capillary tube has a first end and an internal bore. The first end of the pre-finished capillary tube is wet-etched in an etchant for an etch duration. A protective fluid flows through the internal bore of the capillary tube at a flow rate during the etch duration and the flow rate and the etch duration are determined to obtain the desired tip profile below a liquid level of the etchant.