Global Patent Index - EP 0667390 B1

EP 0667390 B1 2000-05-17 - Improved additif for lubricating oil

Title (en)

Improved additif for lubricating oil

Title (de)

Verbesserte Additive für Schmieröle

Title (fr)

Additif amélioré pour huile lubrifiante

Publication

EP 0667390 B1 (DE)

Application

EP 95101609 A

Priority

DE 4404620 A

Abstract (en)

[origin: EP0667390A2] Lubricating oil additive contains, as active constituents, (co)polymers, or (co)oligomers of monomers with long-chain alkyl gps. obtd. by free-radical polymerisation. The free radical initiators (I) used must: (a) decompose to form prim. prods. that are easily sepd. and/or: (b) form no strongly polar decompsn. prods. and are used in amts. of 0.01-5 wt.% under controlled polymerisation conditions, so that the Mw of the prod. is in the 500-30000 range.

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

C10M 145/14; C08F 4/04; C08F 4/34; C10M 145/16

IPC 8 full level (invention and additional information)

C08F 4/04 (2006.01); C08F 4/32 (2006.01); C08F 4/34 (2006.01); C10M 145/14 (2006.01); C10M 145/16 (2006.01)

CPC (invention and additional information)

C10M 145/16 (2013.01); C10M 145/14 (2013.01); C10M 2209/084 (2013.01); C10M 2209/086 (2013.01)

Designated contracting state (EPC)

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

EPO simple patent family

EP 0667390 A2 19950816; EP 0667390 A3 19950927; EP 0667390 B1 20000517; AT 193050 T 20000615; DE 4404620 A1 19950817

INPADOC legal status


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2010-01-01 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

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2002-02-15 [REG FR CJ] CHANGE IN LEGAL FORM

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-09-28 [REG CH PL] PATENT CEASED

2001-09-03 [NLT1] NL: MODIFICATIONS OF NAMES REGISTERED IN VIRTUE OF DOCUMENTS PRESENTED TO THE PATENT OFFICE PURSUANT TO ART. 16 A, PARAGRAPH 1

- Owner name: ROEHM GMBH & CO. KG

2001-08-31 [BERE] BE: LAPSED

- Owner name: ROHM G.M.B.H.

- Effective date: 20010228

2001-05-09 [26N] NO OPPOSITION FILED

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- Effective date: 20000607

2000-06-21 [REF] CORRESPONDS TO:

- Document: DE 59508335 20000621

2000-05-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

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2000-05-17 [REF] CORRESPONDS TO:

- Document: AT 193050 T 20000615

1999-12-13 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

1996-07-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19960603

1996-04-24 [17P] REQUEST FOR EXAMINATION FILED

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