Global Patent Index - EP 1080036 A1

EP 1080036 A1 2001-03-07 - HIGHLY PURE AQUEOUS HYDROGEN PEROXIDE SOLUTIONS, METHOD FOR PRODUCING SAME AND THEIR USE

Title (en)

HIGHLY PURE AQUEOUS HYDROGEN PEROXIDE SOLUTIONS, METHOD FOR PRODUCING SAME AND THEIR USE

Title (de)

HOCHREINE WÄSSRIGE WASSERSTOFFPEROXID-LÖSUNGEN, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG

Title (fr)

SOLUTIONS DE PEROXYDE D'HYDROGENE AQUEUSES DE GRANDE PURETE, LEUR PROCEDE DE PRODUCTION ET LEUR UTILISATION

Publication

EP 1080036 A1 (DE)

Application

EP 99920708 A

Priority

  • DE 19817794 A
  • EP 9902627 W

Abstract (en)

[origin: DE19817794A1] High purity aqueous hydrogen peroxide solutions, used for electronic substrate treatment and having an extremely low total organic carbon content, are new. High purity aqueous hydrogen peroxide solutions, used for treating substrates of electronic components, have a total organic carbon content of \}100 ppb. Independent claims are also included for the following: (i) production of high purity aqueous hydrogen peroxide solutions by one of the following methods performed in water and in the absence of organic compounds and their source materials: catalytic reaction of hydrogen and oxygen, electrochemical reduction of oxygen or electrolysis of acidic ammonium sulfate solutions; and (ii) high purity aqueous hydrogen peroxide solutions produced by the above process.

IPC 1-7 (main, further and additional classification)

C01B 15/01; C01B 15/013

IPC 8 full level (invention and additional information)

C01B 15/01 (2006.01); C01B 15/013 (2006.01); C01B 15/029 (2006.01); H01L 21/306 (2006.01)

CPC (invention and additional information)

H01L 21/02052 (2013.01); C01B 15/01 (2013.01); C01B 15/013 (2013.01); C01B 15/0135 (2013.01); C01B 15/029 (2013.01)

Citation (search report)

See references of WO 9954254A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI NL SE

EPO simple patent family

DE 19817794 A1 19991028; AU 3818999 A 19991108; AU 763221 B2 20030717; BR 9909820 A 20001219; CA 2328952 A1 19991028; CN 1306495 A 20010801; EP 1080036 A1 20010307; JP 2002512168 A 20020423; NO 20005281 A 20001113; NO 20005281 D0 20001020; US 6592840 B1 20030715; WO 9954254 A1 19991028; ZA 200007009 B 20041117

INPADOC legal status


2007-05-30 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20061125

2001-04-25 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010309

2001-03-07 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001020

2001-03-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB IT LI NL SE