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:
Feb. 03, 1976
Filed:
Oct. 31, 1972
Applicant:
Inventors:
Klaus Brill, Korntal, DT;
Christian Glassman, Stuttgart, DT;
Assignee:
Robert Bosch G.m.b.H., Stuttgart, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ;
U.S. Cl.
CPC ...
427343 ; 427 99 ; 427162 ; 427250 ; 427258 ; 427282 ; 427294 ; 427350 ; 427367 ; 427404 ;
Abstract
A vapor deposited aluminum metallizing film is transformed into a transparent insulating oxide at selective locations at which a film of bismuth or sodium is vapor deposited either beforehand on the substrate or afterward on the aluminum. The oxide forms at only the selected locations to the full depth of the layer and has insulating qualities of interest for electrical components. The use of a pigmented substrate which will show through the transparent oxide areas is useful for providing visible legends, symbols, scales, and reference margins, marks or rasters.