EP 1793950 A2 20070613 - DEOXIDISATION OF VALVE METAL POWDERS
Title (en)
DEOXIDISATION OF VALVE METAL POWDERS
Title (de)
DESOXIDATION VON VENTILMETALLPULVERN
Title (fr)
DESOXYDATION DE POUDRES METALLIQUES DE SOUPAPES
Publication
Application
Priority
- EP 2005009230 W 20050826
- DE 102004043343 A 20040908
Abstract (en)
[origin: WO2006027119A2] The invention relates to the deoxidisation of valve metal powders, in particular of niobium powders, tantalum powders or their alloys by treating the valve metal powder with calcium, barium, lanthanum, yttrium or cerium as the deoxidisation agent. The invention also relates to valve metal powders, which are characterised by a ratio of the sum of the sodium, potassium and magnesium content to the capacitance of less than 3 ppm/10,000 µFV/g.
IPC 8 full level
B22F 9/22 (2006.01)
CPC (source: EP KR US)
B22F 9/22 (2013.01 - EP KR US); C22B 5/04 (2013.01 - EP US); C22B 5/12 (2013.01 - EP US); C22B 34/24 (2013.01 - EP KR US); H01G 9/0525 (2013.01 - EP US); H01G 9/15 (2013.01 - KR)
Citation (search report)
See references of WO 2006027119A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006027119 A2 20060316; WO 2006027119 A3 20060615; AU 2005281918 A1 20060316; BR PI0515172 A 20080708; CN 101052488 A 20071010; DE 102004043343 A1 20060323; EP 1793950 A2 20070613; IL 181782 A0 20070704; JP 2008512568 A 20080424; KR 20070098988 A 20071008; MX 2007002717 A 20080311; RU 2007112796 A 20081020; RU 2010116085 A 20111027; RU 2404881 C2 20101127; SV 2006002222 A 20060525; TW 200624200 A 20060716; US 2008011124 A1 20080117; ZA 200701902 B 20080827
DOCDB simple family (application)
EP 2005009230 W 20050826; AU 2005281918 A 20050826; BR PI0515172 A 20050826; CN 200580037624 A 20050826; DE 102004043343 A 20040908; EP 05782917 A 20050826; IL 18178207 A 20070307; JP 2007530614 A 20050826; KR 20077007633 A 20070403; MX 2007002717 A 20050826; RU 2007112796 A 20050826; RU 2010116085 A 20100423; SV 2005002222 A 20050908; TW 94130621 A 20050907; US 57467502 A 20020826; ZA 200701902 A 20070305