Back to results
US 2022/0093341 A1Published application
Fabrication of capacitors and recovery of capacitor fabrication materials
AssigneePacesetter, Inc.
InventorsRalph Jason Hemphill, Henry Buser, III, Shelley M. Smith, Brian Smith, Debbie Uselman
Life of this patent
Estimating the term…
Abstract
Fabricating a capacitor include using a first etching solution to etch a first sheet of material so as to generate a spent etchant. At least one chemical component is recovered from the spent etchant. A second etching solution is used to etch a second sheet of material. The second etchant includes at least one of the chemical components that was recovered from the spent etchant.
Claims18
A method of fabricating a capacitor, comprising:
- using a first etching solution to etch a first sheet of material so as to generate a spent etchant;
- recovering at least one chemical component from the spent etchant;
- and
- using a second etching solution to etch a second sheet of material, the second etchant including the chemical component that was recovered from the spent etchant.
1 more element
A method of fabricating a capacitor electrode, comprising:
- exposing a sheet of material to an etching solution so as to generate a spent etching solution that includes metal ions from the sheet of material;
- adding a precipitant to the spent etching solution so as to cause precipitation of a compound in a precipitation solution, the compound including the metal ions from the sheet of material, the precipitant being disassociated in the precipitation solution such that the precipitation solution includes cations from the precipitant;
- and
- removing from the precipitation solution at least a portion of the cations from the precipitant.
1 more element
Dependencies are inferred from the claim text.