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Teisinis statusas
Patentas neįsigaliojo (pagal EPK)
| (51) | INT.CL. | E21B 43/24 | |
| E21B 43/17 | |||
| E21B 43/30 | |||
| E21B 36/04 |
| (11) | Patento numeris | 1871978 |
| (13) | Dokumento rūšis | T |
| (96) | Europos patento paraiškos numeris | 06750964.6 |
| Europos patento paraiškos padavimo data | 2006-04-21 | |
| (97) | Europos patento paraiškos paskelbimo data | 2008-01-02 |
| (45) | Paskelbimo apie Europos patento išdavimą data | 2016-11-23 |
| (46) | Apibrėžties vertimo paskelbimo data |
| (86) | Numeris | PCT/US2006/015084 |
| Data | 2006-04-21 |
| (87) | Numeris | WO 2006/116078 |
| Data | 2006-11-02 |
| (30) | Numeris | Data | Šalis |
| 674081 P | 2005-04-22 | US |
| (72) |
SANDBERG, Chester Ledlie, US
VINEGAR, Harold J., US
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| (73) |
Shell Internationale Research Maatschappij B.V.,
Carel van Bylandtlaan 30, 2596 HR Den Haag,
NL
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| (54) | INSULATED CONDUCTOR TEMPERATURE LIMITED HEATER FOR SUBSURFACE HEATING COUPLED IN A THREE-PHASE WYE CONFIGURATION |
| INSULATED CONDUCTOR TEMPERATURE LIMITED HEATER FOR SUBSURFACE HEATING COUPLED IN A THREE-PHASE WYE CONFIGURATION |