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. 21, 1990
Filed:
Aug. 17, 1989
Applicant:
Inventors:
Gerard Parissis, Brussels, BE;
Lucien Clerbois, Vilvoorde, BE;
Assignee:
Solvay & Cie (Societe Anonyme), Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
156627 ; 156640 ; 156656 ; 156664 ; 252 795 ; 204 321 ; 204 351 ; 204146 ; 423 62 ; 423 68 ; 427352 ; 134-2 ; 134-1 ; 134 42 ;
Abstract
Cleaning baths for the removal of a coating containing niobium on a substrate, consisting of an aqueous solution of hydrogen peroxide and of alkali metal hydroxide. The coating is treated with the bath, to remove it from the substrate by dissolving.