Global Patent Index - EP 0798694 A3

EP 0798694 A3 2000-03-01 - Cleanable low frequency sound attenuator for channels

Title (en)

Cleanable low frequency sound attenuator for channels

Title (de)

Reinigbarer Schalldämpfer (SD) für Kanäle für tiefe Frequenzen

Title (fr)

Atténuateur du son de fréquences bas nettoyable pour canaux

Publication

EP 0798694 A3 (DE)

Application

EP 97104736 A

Priority

DE 19612572 A

Abstract (en)

[origin: EP0798694A2] The channel (1) contains perforated pieces (3) of different lengths. These are connected with chambers (4) outside the channel which form sound absorbers. The channels and or pieces are made of sheet metal, plastics, concrete or brick. The chambers can be cleaned periodically or continuously by fixed or movable nozzles (9). The chambers are connected with pipes (8) for cleaning agent via valves or other adjustments (7).

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

G10K 11/172

IPC 8 full level (invention and additional information)

G10K 11/172 (2006.01)

CPC (invention and additional information)

G10K 11/172 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT CH DE FR GB IT LI NL

EPO simple patent family

EP 0798694 A2 19971001; EP 0798694 A3 20000301; EP 0798694 B1 20030813; AT 247324 T 20030815; DE 19612572 A1 19971002

INPADOC legal status


2017-04-12 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20170319

2017-03-31 [REG CH PL] PATENT CEASED

2017-03-20 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 59710558

2016-08-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2016-03-22 [REG FR PLFP] FEE PAYMENT

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2008-09-15 [REG CH PCAR] CHANGE OF THE ADDRESS OF THE REPRESENTATIVE

- Free text: ALDO ROEMPLER PATENTANWALT;BRENDENWEG 11 POSTFACH 154;9424 RHEINECK (CH)

2004-08-04 [26N] NO OPPOSITION FILED

- Effective date: 20040514

2004-05-21 [ET] FR: TRANSLATION FILED

2004-02-02 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2004-01-15 [REG CH PFA] NAME/FIRM CHANGED

- Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWA

- Free text: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.#LEONRODSTRASSE 54#80636 MUENCHEN (DE) -TRANSFER TO- FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.#HANSASTRASSE 27 C#80686 MUENCHEN (DE)

2003-12-03 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20031112

2003-12-01 [NLT2] NL: MODIFICATIONS (OF NAMES), TAKEN FROM THE EUROPEAN PATENT PATENT BULLETIN

- Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER

2003-11-19 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DERANGEWAND

2003-09-30 [REG CH NV] NEW AGENT

- Representative's name: OK PAT AG PATENTE MARKEN LIZENZEN

2003-09-18 [REF] CORRESPONDS TO:

- Document: DE 59710558 P 20030918

2003-08-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2003-08-13 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT CH DE FR GB IT LI NL

2003-08-13 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2003-08-13 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20030813

2003-03-05 [RTI1] TITLE (CORRECTION)

- Free text: CLEANABLE LOW FREQUENCY SOUND ATTENUATOR

2002-08-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020626

2000-03-01 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT CH DE FR GB IT LI NL

1997-10-01 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970320

1997-10-01 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT CH DE FR GB IT LI NL