Patent US1659795A successfully refreshed from Google Patents.
Patent US3191679A successfully refreshed from Google Patents.
US3191679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting process for recovering bitumens from the earth
Assignee: Individual
•
Filing: 1964-04-20
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Granted: 1965-06-29
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Wendell S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:09
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE PROCESS FOR REMOVING FROM THE EARTH A COMBUSTIBLE AND MELTABLE SOLID BITUMEN EMPLACED IN A FORMATION IN WHICH A BITUMINOUS STRATUM COMMUNICATES WITH THE SURFACE OF THE EARTH AND ADJOINS A SECOND NONCOMBUSTIBLE AND INFUSIBLE FORMATION, COMPRISING THE STEPS OF PRODUCING IN SAID SECOND FORMATION A BORE HOLE COMMUNICATION WITH SAID BITUMINOUS FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH AND SUFFICIENTLY REMOTE FROM THE SAID BITUMINOUS FORMATION NEAR THE SURFACE OF THE EARTH TO PROVIDE THERMAL ISOLATION OF SAID FORMATION FROM SAID BORE HOLE, INSERTING IN SAID BORE HOLE CONDUIT MEANS COMMUNICATING WITH SAID BITUMINOUS FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH, SUPPLYING OXIDIZING GAS TO SAID FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH, IGNITING BITUMEN IN SAID BITUMINOUS FORMATION INTO IN SITU COMBUSTION WITH SAID OXIDIZING GAS, MELTING PORTIONS OF SAID
Claim 2
Dependent Claim
145 words
THE PROCESS FOR REMOVING FROM THE EARTH A COMBUSTIBLE AND MELTABLE SOLID BITUMEN EMPLACED IN A FORMATION IN WHICH A BITUMINOUS STRATUM COMMUNICATES WITH THE SURFACE OF THE EARTH AND ADJOINS A SECOND NONCOMBUSTIBLE AND INFUSIBLE FORMATION, COMPRISING THE STEPS OF PRODUCING IN SAID SECOND FORMATION A BORE HOLE COMMUNICATION WITH SAID BITUMINOUS FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH AND SUFFICIENTLY REMOTE FROM THE SAID BITUMINOUS FORMATION NEAR THE SURFACE OF THE EARTH TO PROVIDE THERMAL ISOLATION OF SAID FORMATION FROM SAID BORE HOLE, INSERTING IN SAID BORE HOLE CONDUIT MEANS COMMUNICATING WITH SAID BITUMINOUS FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH, SUPPLYING OXIDIZING GAS TO SAID FORMATION AT A POINT REMOTE FROM THE SURFACE OF THE EARTH, IGNITING BITUMEN IN SAID BITUMINOUS FORMATION INTO IN SITU COMBUSTION WITH SAID OXIDIZING GAS, MELTING PORTIONS OF SAID
References Cited (Backward Citations)
US531787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |