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:
Apr. 05, 2005
Filed:
Nov. 13, 2002
Applicants:
Torsten H. Hartmann, Moses Lake, WA (US);
Henry Dare Wood, Moses Lake, WA (US);
Inventors:
Torsten H. Hartmann, Moses Lake, WA (US);
Henry Dare Wood, Moses Lake, WA (US);
Assignee:
Advanced Silicon Materials LLC, Silver Bow, MT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B015/20 ;
U.S. Cl.
CPC ...
Abstract
Methods and apparatuses are useful to add polycrystalline rod material to the crucible of a CZ furnace and thereby increase utilization of crucible volume in the production of large diameter CZ silicon ingots. Multiple silicon rods are melted in the CZ furnace, and the subsequent production of a single crystal silicon ingot can occur without operating the isolation valve or opening the upper chamber of the furnace.