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:
Aug. 14, 1984
Filed:
Sep. 01, 1982
Applicant:
Inventors:
Brian J Fitzpatrick, Ossining, NY (US);
Thomas F McGee, III, Ossining, NY (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
1566 / ; 156D / ; 156D / ; 156D / ; 156D / ; 156D / ; 432264 ; 422248 ; 423509 ;
Abstract
A large polycrystalline body of a 2,6 or 3,5 volatile compound is produced in a graphite crucible under low external pressure by passing a narrow molten zone through a charge of the compound contained in the graphite crucible the interior of which is coated with pyrolytic graphite. By a similar technique, but by use of a hot zone cooler then the molten zone, the polycrystalline body is converted to a monocrystalline body.