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. 12, 1993
Filed:
Sep. 16, 1991
Applicant:
Inventors:
Christopher E Chidsey, North Plainfield, NJ (US);
Henry H Law, Berkeley Heights, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427343 ; 427404 ; 4274191 ; 4274301 ;
Abstract
Transition-metal-coated metallic elements, such as electrical contacts, are protected from corrosion by a novel surface treatment. In one embodiment, the treatment involves application of a phosphonate solution, optionally preceded by application of a chromatic solution phosphonate.