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Machine translation
1. (WO2007005729) CONVERSION OF HIGH PURITY SILICON POWDER TO DENSIFIED COMPACTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/005729    International Application No.:    PCT/US2006/025809
Publication Date: 11.01.2007 International Filing Date: 30.06.2006
IPC:
B22F 1/00 (2006.01), B22F 3/12 (2006.01)
Applicants: RAVI, Jagannathan [US/US]; (US).
HARIHARAN, Alleppey [US/US]; (US).
CHANDRA, Mohan [US/US]; (US)
Inventors: RAVI, Jagannathan; (US).
HARIHARAN, Alleppey; (US).
CHANDRA, Mohan; (US)
Priority Data:
60/696,235 01.07.2005 US
Title (EN) CONVERSION OF HIGH PURITY SILICON POWDER TO DENSIFIED COMPACTS
(FR) CONVERSION DE POUDRE DE SILICIUM DE HAUTE PURETE EN PRODUITS COMPACTS DENSIFIES
Abstract: front page image
(EN)This invention describes methods of compacting and densifying high purity silicon powder to defined geometric forms and shapes. High purity silicon powder is first mixed with binder from a select group of binders and pressed into desired shapes in a mechanical equipment. The binder is removed either in a separate step or combined with a subsequent sintering operation. The binders and process conditions are chosen to make negligible change to the purity of the silicon in the end product. When high purity silicon powder is utilized in the process, the end use for the densified silicon compacts is primarily as feedstock for silicon-based photovoltaic manufacturing industries.
(FR)L'invention concerne des proc�d�s destin�s � compacter et densifier une poudre de silicium de haute puret� en formes g�om�triqud�finies. La poudre de silicium de haute puret� est d'abord m�lang�e avec un liant provenant d'un groupe s�lectionn� de liants, et compress�e en formes souhait�es dans un �quipement m�canique. Le liant est enlev� en une �tape s�par�e ou concomitamment � une op�ration de frittage subs�quente. Les liants et les conditions dproc�d� sont choisis de fa�on que les changements de puret� du silicium dans le produit final soient n�gligeables. Lorsqu'on utilise une poudre de silicium de haute puret� dans ce proc�d�, les produits compacts de silicium densifi�s trouvent g�n�ralement une utilisation finale comme mati�res d'alimentation pour l'industriede la fabrication de composants photovolta�ques � base de silicium.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)