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. 22, 1985
Filed:
Oct. 30, 1980
Applicant:
Inventors:
Clifton W Draper, Hopewell, NJ (US);
John M Poate, Summit, NJ (US);
Assignee:
AT&T Technologies, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; B05D / ; B23K / ; B32B / ;
U.S. Cl.
CPC ...
428669 ; 29879 ; 2191 / ; 427 531 ; 427 88 ; 427 89 ; 427 91 ; 427125 ; 428672 ; 428680 ;
Abstract
A very thin gold coating (e.g., 270 to 3,500 Angstroms) is vapor deposited on the surface of a nickel substrate. A short radiant energy pulse from a laser having a pulse length of about 130 nanoseconds is directed at the coated surface to melt portions of the gold coating and the nickel substrate therebelow. The energy pulse is removed to permit the melted material to resolidify as an alloy with a high concentration of gold at the surface thereof.