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:
Sep. 05, 1988
Filed:
Dec. 05, 1985
Applicant:
Inventors:
David L Johnson, Bethlehem, PA (US);
Robert J Lavigna, Bath, PA (US);
Wen Lin, Allentown, PA (US);
Raymond J Newman, Hopewell, NJ (US);
Subramani Rajaram, Flanders, NJ (US);
Joseph C Veshinfsky, Whitehall, PA (US);
George Williams, Mercerville, NJ (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
1566171 ; 156605 ; 1566204 ; 156D / ; 156D / ; 422248 ; 373163 ;
Abstract
A glass crucible (30) for containing a material from which a silicon crystal melt is produced, wherein the inside surface area of the crucible is increased to react with the silicon melt (31) to increase the oxygen content thereof. The inside surface area may be increased by incorporating inwardly directed silica ribs (40) or concentric, hollow silica cylinders (32) as well as forming corrugations (45) or undulations on the inside surface thereof.