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. 13, 2007
Filed:
Apr. 15, 2003
Alleppey V Hariharan, Austin, TX (US);
Mohan Chandra, Merrimack, NH (US);
Kedar P Gupta, Hollis, NH (US);
Alleppey V Hariharan, Austin, TX (US);
Mohan Chandra, Merrimack, NH (US);
Kedar P Gupta, Hollis, NH (US);
GT Solar Incorporated, Merrimack, NH (US);
Abstract
A bulk silicon material for making silicon ingots, consisting of silicon pellets, and a method for making the pellets from an agglomerate-free source of high purity silicon powder by feeding a controlled amount of silicon powder that is free of intentional additives and binders into a pellet die, and dry compacting the powder at ambient temperature with pressure to produce a pellet that has a density of about 50–75% of the theoretical density of elemental silicon, a weight within a range of about 1.0 gram to about 3.0 grams and preferably of about 2.3 grams, a diameter in the range of 10 mm to 20 mm and preferably of about 14 mm, and a height in the range of 5 mm to 15 mm and preferably of about 10 mm.