Global Patent Index - EP 1218291 A1

EP 1218291 A1 20020703 - METHOD FOR PRODUCING HIGH-PURITY HYDROCHLORIC ACID

Title (en)

METHOD FOR PRODUCING HIGH-PURITY HYDROCHLORIC ACID

Title (de)

VERFAHREN ZUR HERSTELLUNG HOCHREINER SALZSAÜRE

Title (fr)

PROCEDE DE PREPARATION D'ACIDE CHLORHYDRIQUE EXTREMEMENT PUR

Publication

EP 1218291 A1 20020703 (DE)

Application

EP 00964269 A 20001004

Priority

  • DE 19948206 A 19991007
  • EP 0009678 W 20001004

Abstract (en)

[origin: DE19948206A1] The invention relates to a novel method, which can be carried out according to industrial standards, for producing high-purity hydrochloric acid with a very low particle content, for use in the production of semiconductors.

IPC 1-7

C01B 7/07

IPC 8 full level

C01B 7/01 (2006.01); C01B 7/07 (2006.01); H01L 21/00 (2006.01)

CPC (source: EP)

C01B 7/0706 (2013.01); C01B 7/0737 (2013.01); H01L 21/00 (2013.01)

Citation (search report)

See references of WO 0125144A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

DE 19948206 A1 20010412; AU 7524800 A 20010510; CA 2387584 A1 20010412; CN 100473600 C 20090401; CN 1377323 A 20021030; EP 1218291 A1 20020703; JP 2003511329 A 20030325; JP 4718077 B2 20110706; KR 100742477 B1 20070725; KR 20020048949 A 20020624; MY 128168 A 20070131; TW 539646 B 20030701; US 6793905 B1 20040921; WO 0125144 A1 20010412

DOCDB simple family (application)

DE 19948206 A 19991007; AU 7524800 A 20001004; CA 2387584 A 20001004; CN 00813864 A 20001004; EP 0009678 W 20001004; EP 00964269 A 20001004; JP 2001528103 A 20001004; KR 20027004429 A 20020404; MY PI20004651 A 20001005; TW 89120579 A 20001003; US 11006402 A 20020408