US3072188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heating underground formations around the borehole of a well
Assignee: Gulf Research and Development Co
•
Filing: 1958-12-30
•
Granted: 1963-01-08
•
Expires: 1978-12-30
Abstract
No abstract record available.
Inventors
- 👤 Richard A Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:58
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A METHOD OF HEATING A WELL BORE AND AN UNDERGROUND FORMATION SURROUNDING THE WELL BORE COMPRISING PACKING THE WELL BORE ADJACENT SAID UNDERGROUND FORMA-
Claim 2
Independent Claim
24 words
A METHOD OF HEATING A WELL BORE AND AN UNDERGROUND FORMATION SURROUNDING THE WELL BORE COMPRISING PACKING THE WELL BORE ADJACENT SAID UNDERGROUND FORMA-
References Cited (Backward Citations)
US2670047A
Cited
US2913050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |