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:
Jan. 23, 1979
Filed:
Apr. 27, 1978
Applicant:
Inventor:
Barry B Pruett, St. Petersburg, FL (US);
Assignee:
E-Systems, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25F / ; C25F / ;
U.S. Cl.
CPC ...
2041291 ; 20412965 ; 20412975 ;
Abstract
A method for etching tin oxide films from substrate materials is provided that includes the steps of forming an etching pattern layer of an active metal on the tin oxide film that is to be etched, contacting the active metal cathodically in an electrolytic solution, and subsequently contacting the active metal anodically in the electrolyte to thereby etch those portions of the tin oxide film that are covered by the etching pattern of active metal.