EP1410126A4
Differential current source with active common mode reduction
Abstract
A voltage-controlled current source provides operation as either a differential current source for a floating load, or operation as a grounded current source when one end of the load is grounded. Switching between operation as a differential current source and operation as a grounded current source is automatic, and will accommodate significant lead resistance between the source and the load. Additionally, in absence of a grounded load the circuit can provide active common mode reduction using active feedback to reduce common mode voltage on the load.
Term
Term ended
Projected expiry passed 10 October 2021, 5 years ago.
- Priority
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- Published
- Projected expiry
- Today
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| US4451779A | Cites | United States of America | A | Search report | 1,2,4-6 |
| US5021729A | Cites | United States of America | DA | Search report | 1,4,5 |
15 members in 7 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 252212P | United States of America | – | |
| 25221200 | United States of America | P | |
| 971274 | United States of America | – | |
| 97127401 | United States of America | A | |
| 0131524 | United States of America | W |
Members15
| Document | Office | Kind | |
|---|---|---|---|
| US2002060915A1 | United States of America | A1 | |
| US6501255B2 | United States of America | B2 | |
| WO03054924A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU2001298059A1 | Australia | A1 | |
| AU2001298059A8 | Australia | A8 | |
| WO03054924A3 | World Intellectual Property Organization (WIPO) | A3 | |
| EP1410126A2 | European Patent Office (EPO) | A2 | |
| JP2005513657A | Japan | A | |
| EP1410126A4This record | European Patent Office (EPO) | A4 | |
| EP1410126B1 | European Patent Office (EPO) | B1 | |
| AT349731T | Austria | T | |
| ATE349731T1 | Austria | T1 | |
| DE60125601D1 | Germany | D1 | |
| DE60125601T2 | Germany | T2 | |
| JP4109200B2 | Japan | B2 |
45 legal events, as 6 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent expired after termination of 20 yearsExpiredPE20 | PE20 | GB | |
| Patent ceasedCeasedPL | PL | CH | |
| Expiry of rightR071 | R071 | DE | |
| 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 | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Fee paymentPLFP | PLFP | FR | |
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| 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 | |
| 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 | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Fr: translation filedET | ET | EP | |
| Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents actLapsedNLV1 | NLV1 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| New agentNV | NV | CH | |
| 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 | |
| Corresponds to:REF | REF | EP | |
| European patents granted designating irelandGrantedFG4D | FG4D | IE | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| 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 | |
| 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 | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | EP | |
| Supplementary search report drawn up and despatchedA4 | A4 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Request for examination filed17P | 17P | 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
- 1410126
- Application
- 12750824
Titles3
- German
- DIFFERENZSTROMQUELLE MIT AKTIVER GLEICHTAKTREDUZIERUNG
- English
- DIFFERENTIAL CURRENT SOURCE WITH ACTIVE COMMON MODE REDUCTION
- French
- SOURCE DE COURANT DIFFERENTIEL A REDUCTION DE TENSION DE MODE COMMUN SOUS RETROACTION ACTIVE
Classification
- CPC, 4
- H03F3/45475
- H03F3/45941
- H03F2203/45138
- H03F2203/45441
- IPC, 3
- G05F1 10
- H03F3 34
- H03F3 45
Designated states20
- Contracting states, 20
- Austria
- Belgium
- Switzerland
- Cyprus
- Germany
- Denmark
- Spain
- Finland
- France
- United Kingdom
- Greece
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Sweden
- Türkiye