EP0344547A3
Improved process for the production of perfluoropolyethers substantially comprising perfluorooxyethylene and perfluorooxypropylene units
Abstract
Improved process for producing perfluoropolyethers predominantly composed of units of formulae -CF2CF20-and and terminal perfluoroalkyl groups, with a ratio of the above C3/C2 units within the range of from 0.2 to 6, showing a good combination of chemical and physical properties, comprising the photo-oxidation of C3F6 and C2F4 under controlled conditions.
Term
Term ended
Projected expiry passed 19 May 2009, 17.3 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| FR1585601A | Cites | France | XD | Search report |
22 members in 13 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 2064988 | Italy | A | |
| 2064988 | Italy | A | |
| 2064988 | Italy | – | |
| 2064988 | – | – | – |
| IT19880020649 | – | – | – |
Members22
| Document | Office | Kind | |
|---|---|---|---|
| IT8820649A0 | Italy | A0 | |
| AU3481189A | Australia | A | |
| AU3481189A | Australia | A | |
| EP0344547A2 | European Patent Office (EPO) | A2 | |
| KR890017219A | Republic of Korea | A | |
| JPH0243219A | Japan | A | |
| IT1217658B | Italy | B | |
| EP0344547A3This record | European Patent Office (EPO) | A3 | |
| ZA893618B | South Africa | B | |
| US5000830A | United States of America | A | |
| AU615062B2 | Australia | B2 | |
| IL90312A | Israel | A | |
| RU1838336C | Russian Federation | C | |
| EP0344547B1 | European Patent Office (EPO) | B1 | |
| DE68924498D1 | Germany | D1 | |
| DE68924498T2 | Germany | T2 | |
| CA1338402C | Canada | C | |
| CZ293689A3 | Czechia | A3 | |
| CZ281859B6 | Czechia | B6 | |
| UA18252A | Ukraine | A | |
| KR0127671B1 | Republic of Korea | B1 | |
| JP2941305B2 | Japan | B2 |
31 legal events, as 4 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Patent ceasedCeasedPL | PL | CH | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Fr: translation filedET | ET | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE PATENT HAS BEEN GRANTEDSTAA | STAA | EP | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0344547
- Publication, DOCDB
- 0344547
- Publication, EPODOC
- EP0344547
- Application
- 89109067
- Application, DOCDB
- 89109067
- Application, EPODOC
- EP19890109067
Titles3
- German
- Verfahren für die Herstellung von Perfluoroxyethylen- und Perfluoroxypropyleneinheiten enthaltenden Perfluoropolyäthern
- English
- Improved process for the production of perfluoropolyethers substantially comprising perfluorooxyethylene and perfluorooxypropylene units
- French
- Procédé pour la préparation de perfluoropolyéthers contenant des unités perfluorooxyéthylène et perfluorooxypropylène
Classification
- CPC, 3
- C08G65/3236
- C08G65/00
- C08G65/007
- IPC, 5
- C08G65 00
- C08G65 48
- C08G65 32
- C08G65 323
- C08G67 00
Designated states1
- Contracting states, 1
- Sweden