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:
Mar. 15, 1994
Filed:
Sep. 30, 1991
Applicant:
Inventors:
Zbigniew Zurecki, Macungie, PA (US);
Kerry B Berger, Lehighton, PA (US);
Robert B Swan, Bath, PA (US);
Assignee:
Air Products and Chemicals, Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
75345 ; 75346 ; 75 101 ;
Abstract
A metal powder is produced by atomizing molten metal in an electric arc spray gun and rapidly quenching the resulting droplets in a liquid cryogen to form fine, highly spherical, oxide-free particles. The rapid quenching yields particles with a very fine, uniform microstructure which melt rapidly and uniformly when later heated. The powder is especially well-suited for making solder paste for device fabrication in the electronics industry.