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:
Dec. 12, 2023
Filed:
Jun. 01, 2017
Applicants:
Queen's University AT Kingston, Kingston, CA;
University Court of the University of St. Andrews, Fife, GB;
Inventors:
Brian E. Mariampillai, Inverary, CA;
Abrar R. E. Alrashed, Kingston, CA;
Cathleen M. Crudden, Kingston, CA;
J. Hugh Horton, Kinston, CA;
Christopher J. Baddeley, Fife, GB;
Christian R. Larrea, Fife, GB;
Assignees:
QUEEN'S UNIVERSITY AT KINGSTON, Kingston, CA;
UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWS, Fife, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C23F 1/10 (2006.01);
U.S. Cl.
CPC ...
C23F 1/10 (2013.01);
Abstract
An etchant is described that includes an N-heterocyclic carbene and optionally an appropriate solvent. The etchant was effective at etching a metallic surface having, for example, a metal oxide and/or metal, in both solution phase and vapour-phase. The etchant has been shown to effectively etch oxidized copper and tungsten.