Global Patent Index - EP 1093392 A1

EP 1093392 A1 2001-04-25 - MULTI-STAGE FILTERING DEVICE

Title (en)

MULTI-STAGE FILTERING DEVICE

Title (de)

MEHRSTUFIGE FILTERVORRICHTUNG

Title (fr)

DISPOSITIF DE FILTRAGE A PLUSIEURS ETAGES

Publication

EP 1093392 A1 (DE)

Application

EP 99907630 A

Priority

  • DE 29804541 U
  • EP 9901658 W

Abstract (en)

[origin: TW452519B] A multi-class filteration device, particularly the filteration device for filtering dielectric operation liquid in electroerosive equipments, which consists of at least a refined-filtering element (7), an original liquid inlet (8) and a filtered liquid outlet (9); and there is at least a pre-filtering element (3, 45) connected with one of the refined-filtering elements. The said pre-filtering element consists of an original liquid inlet (2), a fil-tered liquid outlet (4) connected with the original liquid inlet of the refined-filtering element and a filth outlet (5).

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

B01D 29/68; B01D 29/15; B23H 1/10

IPC 8 full level (invention and additional information)

B01D 29/15 (2006.01); B01D 33/067 (2006.01); B01D 36/02 (2006.01)

CPC (invention and additional information)

B01D 36/02 (2013.01); B01D 29/15 (2013.01); B01D 33/067 (2013.01)

Combination set (CPC)

  1. B01D 29/15 + B01D 29/688 + B01D 29/70
  2. B01D 33/067 + B01D 33/073 + B01D 33/503

Citation (search report)

See references of WO 9947234A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

DE 29804541 U1 19980520; EP 1093392 A1 20010425; TW 452519 B 20010901; WO 9947234 A1 19990923

INPADOC legal status


2005-05-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20041105

2003-12-17 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: MANN + HUMMEL GMBH

- Ref Legal Event Code: RAP1

2003-01-15 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021202

2001-04-25 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000731

2001-04-25 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT