EP 3878580 A4 20211229 - METHOD FOR MANUFACTURING NEEDLE-SHAPED OR ROD-SHAPED POROUS IRON POWDER AND NEEDLE-SHAPED OR ROD-SHAPED POROUS IRON POWDER MANUFACTURED THEREBY
Title (en)
METHOD FOR MANUFACTURING NEEDLE-SHAPED OR ROD-SHAPED POROUS IRON POWDER AND NEEDLE-SHAPED OR ROD-SHAPED POROUS IRON POWDER MANUFACTURED THEREBY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON NADELFÖRMIGEM ODER STÄBCHENFÖRMIGEM PORÖSEM EISENPULVER UND DADURCH HERGESTELLTES NADELFÖRMIGES ODER STÄBCHENFÖRMIGES PORÖSES EISENPULVER
Title (fr)
PROCÉDÉ DE FABRICATION DE POUDRE D'ÉPONGE DE FER EN FORME D'AIGUILLE OU EN FORME DE TIGE ET POUDRE D'ÉPONGE DE FER EN FORME D'AIGUILLE OU EN FORME DE TIGE AINSI FABRIQUÉE
Publication
Application
Priority
- KR 20180134325 A 20181105
- KR 2019014795 W 20191104
Abstract (en)
[origin: EP3878580A1] The present invention relates to a method for manufacturing a needle-shaped or rod-shaped porous iron powder. Specifically, the present invention provides a method for manufacturing a needle-shaped or rod-shaped porous iron powder and a needle-shaped or rod-shaped porous iron powder manufactured thereby, the method comprising the steps of: preparing a ferrous dichloride chloride by concentrating a ferrous chloride aqueous solution; solid-liquid separating the ferrous dichloride to prepare ferrous dichloride powder; oxidizing the ferrous dichloride powder; and reducing the oxidized ferrous dichloride.
IPC 8 full level
B22F 1/062 (2022.01); B22F 9/22 (2006.01)
CPC (source: EP KR US)
B22F 1/062 (2022.01 - EP KR US); B22F 9/22 (2013.01 - EP US); B22F 9/24 (2013.01 - KR US); B22F 2201/01 (2013.01 - KR); B22F 2201/013 (2013.01 - US); B22F 2201/03 (2013.01 - KR US); B22F 2201/04 (2013.01 - US); B22F 2301/35 (2013.01 - KR US); B22F 2999/00 (2013.01 - EP)
Citation (search report)
- [I] GB 662051 A 19511128 - DAVIDE PRIMAVESI
- [IA] EP 0014889 A1 19800903 - BASF AG [DE]
- [XA] US 2005145068 A1 20050707 - HU BO [US], et al
- [XA] US 4464196 A 19840807 - FRENCH JAMES E [US]
- See references of WO 2020096293A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3878580 A1 20210915; EP 3878580 A4 20211229; CN 112969544 A 20210615; JP 2022506098 A 20220117; KR 102175428 B1 20201106; KR 20200051233 A 20200513; US 2022008992 A1 20220113; WO 2020096293 A1 20200514
DOCDB simple family (application)
EP 19881941 A 20191104; CN 201980072505 A 20191104; JP 2021523261 A 20191104; KR 20180134325 A 20181105; KR 2019014795 W 20191104; US 201917290677 A 20191104