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. 02, 1982
Filed:
Mar. 20, 1981
Applicant:
Inventors:
Albert Comberg, Aachen, DE;
Karl H Panstruga, Aachen, DE;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23F / ;
U.S. Cl.
CPC ...
427 64 ; 148-63 ; 427160 ; 4273837 ; 427436 ; 427437 ;
Abstract
An adhering bismuth layer is provided on steel components for cathode ray tubes by electroless plating in an acidic aqueous solution of bismuth oxynitrate. The bismuth coated steel components are heated in an oxidizing atmosphere, for example in air, at temperatures between 350.degree. C. and 650.degree. C. until the bismuth coating becomes black.