US3170519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil well microwave tools
Assignee: Individual
•
Filing: 1960-05-11
•
Granted: 1965-02-23
•
Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Duane B Haagensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04; H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B2214/00; H05B2214/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN APPARATUS FOR HEATING A PETROLEUM-BEARING FORMATION AND ADAPTED TO BE CONNECTED TO THHE LOWER EXTREMITY OF A PRODUCING STRING AT A POSITION OPPOSITE SAID FORMATION, SAID APPARATUS COMPRISING A CAPSULE HAVING FIRST AND SECOND PORTIONS, SAID FIRST PORTION OF SAID CAPSULE CONTAINING A PLURALITY OF ELECTRICAL DEVICES MOUNTED THEREIN FOR SIMULTANEOUSLY GENERATING MICROWAVE ENERGY AND THERMAL ENERGY, MEANS FOR SUPPLYING EXCITATION VOLTAGES TO SAID DEVICES, MEANS FOR DIRECTING SAID MICROWAVE ENERGY AT A FREQUENCY OF BETWEEN 1000 AND 300,000 MEGACYCLES INTO SAID PETROLEUM-BEARING FORMATION, SAID SECOND PORTION OF SAID CAPSULE HAVING PERORATIONS THEREIN FOR ALLOWING PETROLEUM PRODUCTS TO ENTER SAID PRODUCING STRING, MEANS FOR CONNECTING SAID CAPSULE TO SAID PRODUCING STRING, SAID SECOND CAPSULE PORTION INCLUDING A HEAT
Claim 2
Independent Claim
119 words
AN APPARATUS FOR HEATING A PETROLEUM-BEARING FORMATION AND ADAPTED TO BE CONNECTED TO THHE LOWER EXTREMITY OF A PRODUCING STRING AT A POSITION OPPOSITE SAID FORMATION, SAID APPARATUS COMPRISING A CAPSULE HAVING FIRST AND SECOND PORTIONS, SAID FIRST PORTION OF SAID CAPSULE CONTAINING A PLURALITY OF ELECTRICAL DEVICES MOUNTED THEREIN FOR SIMULTANEOUSLY GENERATING MICROWAVE ENERGY AND THERMAL ENERGY, MEANS FOR SUPPLYING EXCITATION VOLTAGES TO SAID DEVICES, MEANS FOR DIRECTING SAID MICROWAVE ENERGY AT A FREQUENCY OF BETWEEN 1000 AND 300,000 MEGACYCLES INTO SAID PETROLEUM-BEARING FORMATION, SAID SECOND PORTION OF SAID CAPSULE HAVING PERORATIONS THEREIN FOR ALLOWING PETROLEUM PRODUCTS TO ENTER SAID PRODUCING STRING, MEANS FOR CONNECTING SAID CAPSULE TO SAID PRODUCING STRING, SAID SECOND CAPSULE PORTION INCLUDING A HEAT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |