US2910436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating wells with acid
Assignee: California Research LLC
•
Filing: 1953-10-02
•
Granted: 1959-10-27
•
Expires: 1973-10-02
Abstract
No abstract record available.
Inventors
- 👤 Fatt Irving
- 👤 Joseph F Chittum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:00
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; Y; Y10; Y10S; Y10S507/00; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF ACIDIZING AN EARTH FORMATION COMPRISING CALCAREOUS AND SILICEOUS MATTER WHICH COMPRISES INJECTING INTO THE EARTH FORMATION A SOLUTION OF A MONOCARBOXYLIC ALIPHATIC ACID CONTAINING FROM ONE TO FOUR CARBON ATOMS PER MOLECULE IN A PETROLEUM LIQUID, SAID SOLUTION BEING FREE FROM WATER.
Claim 2
Independent Claim
45 words
THE METHOD OF ACIDIZING AN EARTH FORMATION COMPRISING CALCAREOUS AND SILICEOUS MATTER WHICH COMPRISES INJECTING INTO THE EARTH FORMATION A SOLUTION OF A MONOCARBOXYLIC ALIPHATIC ACID CONTAINING FROM ONE TO FOUR CARBON ATOMS PER MOLECULE IN A PETROLEUM LIQUID, SAID SOLUTION BEING FREE FROM WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |