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. 10, 1981
Filed:
Mar. 15, 1978
Robert J Lavigna, Bath, PA (US);
Raymond E Reusser, Bethlehem, PA (US);
Western Electric Company, Inc., New York, NY (US);
Abstract
Specially selected particles 32 of an irregularly shaped material are almost completely melted in a heated crucible 22. Then while a small upper portion of the material 32 is still partially solid, additional but smaller particles 38 of a material are added thereon. Another method also starts with the specially selected particles 32 of a material which are completely melted in the heated crucible 22. Then the top surface of the liquid is partially frozen into a structural layer 36 to receive the addition of the smaller particles 38. Both techniques substantially prevent extremely hot liquid which is dangerously reactive from being scattered outside the crucible 22 when additional material 38 is added therein. Finally the entire contents of the crucible 22 are melted and a single-crystalline ingot 48 is grown from a melt 34.