Opposition Filed Opposition filed by Siemens Aktiengesellschaft, Siemens AG EP Register Verified

Material for electric contacts

Publication No. EP0039429

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App No. EP81102838

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Filed by Degussa GmbH

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Filed on 1981-04-14

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Issued/Published on 1983-05-11

Official EPO Register

Publication No. EP0039429 A1

Application No. EP81102838 Filed: 1981-04-14

Grant Date 1983-05-11 Mention of grant

Active Oppositions 2 Active EPO Oppositions

Patent Abstract / Summary

Es wird ein Werkstoff für elektrische Kontakte auf der Basis Silber mit 5 bis 20 Gew.-% Zinnoxid und 0,05 bis 5 Gew.-% Wolframoxid beschrieben, der die Verschweißkraft weiter mindert, ohne eine erhöhte Schalttemperatur zu erzeugen. Der Werkstoff enthält zusätzlich 0,1 bis 5 Gew.-% Wismutoxid.

IPC Classifications

H01H1/02

Priority Claims

DE 19803017424 Date: 1980-05-07

Designated Contracting States (7 EPC States)

Austria (AT)

Switzerland (CH)

France (FR)

United Kingdom (GB)

Liechtenstein (LI)

Netherlands (NL)

Sweden (SE)

Parties & Representation

Applicants

Degussa GmbH

Weissfrauenstrasse 9, 60311 Frankfurt

Degussa Aktiengesellschaft

Weissfrauenstrasse 9, D-60311 Frankfurt

Inventors (4)

Böhm, Wolfgang, Dr.

Schillerstrasse 12, D-8755 Alzenau

Wolmer, Roger

Ginnheimer Hohl 20, D-6000 Frankfurt/Main 50

Szulczyk, Andreas, Dipl.-Ing.

Im Hirtengarten 31, D-6464 Linsengericht 5

Malikowski, Willi

Brentanoplatz 11, D-8750 Aschaffenburg

Representatives / Agents

No representative registered

Key Procedural Dates

Request-For-Examination 1981-04-14

First-Examination-Report-Despatched 1982-09-27

Patent Oppositions

Official opposition proceedings filed against European Patent EP0039429 under EPC Article 99.

2 ACTIVE OPPONENTS

Opponent Company

Siemens Aktiengesellschaft

Wittelsbacherplatz 2, DE

Representative

—

Filing Date

1984-02-08

Opposition in Progress

Opponent Company

Siemens AG

Postfach 22 16 34, DE

Representative

—

Filing Date

1984-02-08

Opposition in Progress

Legal Status & Event History

Official European Patent Office legal and procedural status changes recorded for this file.

26 Events Recorded

Date	Code	Event Description	Auth
1983-06-24	ET	FR: TRANSLATION FILED	EP
1986-10-16	NLR2	NL: DECISION OF OPPOSITION	EP
1981-11-11	AK	DESIGNATED CONTRACTING STATES	EP
1983-05-11	AK	DESIGNATED CONTRACTING STATES	EP
1981-11-11	17P	REQUEST FOR EXAMINATION FILED	EP
1983-05-11	REF	CORRESPONDS TO:	EP
2001-05-09	REG	REFERENCE TO A NATIONAL CODE	EP
2001-05-15	REG	REFERENCE TO A NATIONAL CODE	EP
1984-04-18	26	OPPOSITION FILED	EP
1986-09-24	27O	OPPOSITION REJECTED	EP
1995-01-31	EAL	SE: EUROPEAN PATENT IN FORCE IN SWEDEN	EP
2001-06-01	NLV7	NL: CEASED DUE TO REACHING THE MAXIMUM LIFETIME OF A PATENT	EP
2001-06-18	EUG	SE: EUROPEAN PATENT HAS LAPSED	EP
2001-04-14	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2001-04-13	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2001-04-29	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2000-03-22	PGFP	ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2000-03-23	PGFP	ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2000-04-28	PGFP	ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2000-03-13	PGFP	ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2000-03-20	PGFP	ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
1983-03-12	GRAA	(EXPECTED) GRANT	EP
1981-09-12	PUAI	PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE	EP
1986-08-07	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
1986-08-07	PLBN	OPPOSITION REJECTED	EP
1984-02-14	PLBI	OPPOSITION FILED	EP

Patent & Non-Patent Citations

Cited documents and prior art referenced in search and examination reports.

5 Citations

Cited Patent Documents

EP0024349

Espacenet

DE2933338

Espacenet

DE2754335

Espacenet

DE2428146

Espacenet

DE2432335

Espacenet

Worldwide Patent Family

Related applications and patents in the same INPADOC worldwide family.

7 Family Members

Country	Publication Number	Kind	Publication Date	Action
EP	EP0039429A1	A1	1981-11-11	Espacenet
EP	EP0039429B1	B1	1983-05-11	Espacenet
AT	ATE3345T1	T1	1983-05-15	Espacenet
BR	BR8102764A	A	1982-01-26	Espacenet
DE	DE3017424A1	A1	1981-11-12	Espacenet
DE	DE3017424C2	C2	1987-01-15	Espacenet
US	US4341556A	A	1982-07-27	Espacenet

Official File Inspection EPC Art. 128 Public Dossier

Complete European Patent Register Dossier (148 Total Documents)

The full inspection file for Application EP81102838 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.

Open 148-Doc Register Dossier

Procedural Step

Date: 1982-11-05 Procedure: Grant IGRA

Inspect on Register