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:
Nov. 25, 2025
Filed:
Dec. 05, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Shivendra Upadhyay, Copenhagen, DK;
Saulius Vaitiekenas, Copenhagen, DK;
Charles Masamed Marcus, Copenhagen, DK;
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A method of selectively etching a metal component of a workpiece further comprising a ferromagnetic insulator component. The method comprises contacting the metal component with an etchant solution. The etchant solution comprises a basic etchant and a solvent. The method is useful in the context of the fabrication of semiconductor-superconductor-ferromagnetic insulator hybrid devices, for example. The etchant solution may not attack the ferromagnetic insulator component. Also provided is a composition for etching a metal, and a kit comprising the composition and a composition for depositing a styrene-acrylate co-polymer on a surface.