Global Patent Index - EP 1018874 A1

EP 1018874 A1 2000-07-19 - WATER TREATMENT WITH HYDROGEN PEROXIDE AND A POLYQUATERNARY AMMONIUM STABILIZER

Title (en)

WATER TREATMENT WITH HYDROGEN PEROXIDE AND A POLYQUATERNARY AMMONIUM STABILIZER

Title (de)

WASSERBEHANDLUNG MIT WASSERSTOFFPEROXID UND EINEM POLYQUATERNÄREN AMMONIUMSTABILISATOR.

Title (fr)

TRAITEMENT DE L'EAU AVEC DU PEROXYDE D'HYDROGENE ET UN STABILISANT A L'AMMONIUM POLYQUATERNAIRE

Publication

EP 1018874 A1 (EN)

Application

EP 96921228 A

Priority

  • US 9607871 W
  • US 47371995 A

Abstract (en)

[origin: WO9639825A1] A method of treating water by adding hydrogen peroxide and a polyquaternary ammonium compound to the water. The hydrogen peroxide and the polyquaternary ammonium compound are independently added to the water so that the appropriate concentration of each component may be maintained in the water.

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

A01N 33/00; A01N 33/12; A01N 37/52; A01N 59/00; C01B 11/00; C02F 1/00; C02F 1/72; C02F 5/10

IPC 8 full level (invention and additional information)

A01N 33/04 (2006.01); A01N 33/12 (2006.01); A01N 33/26 (2006.01); A01N 43/20 (2006.01); A01N 59/00 (2006.01); C01B 15/037 (2006.01); C02F 1/50 (2006.01); C02F 1/72 (2006.01)

CPC (invention and additional information)

C02F 1/50 (2013.01); A01N 59/00 (2013.01); C01B 15/037 (2013.01); C02F 2103/023 (2013.01); C02F 2103/42 (2013.01)

Combination set (CPC)

  1. A01N 59/00 + A01N 33/12
  2. A01N 59/00 + A01N 2300/00

Designated contracting state (EPC)

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

EPO simple patent family

WO 9639825 A1 19961219; AR 002397 A1 19980311; AU 6249996 A 19961230; BR 9612623 A 19990525; CA 2223704 A1 19961219; EP 1018874 A1 20000719; EP 1018874 A4 20000719; JP 2001519706 A 20011023; ZA 9604767 B 19970108

INPADOC legal status


2001-06-13 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20001201

2000-07-19 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19971210

2000-07-19 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000223

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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