US3032499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of earth formations
Assignee: Western Company of North America
•
Filing: 1958-05-23
•
Granted: 1962-05-01
•
Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 William E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:11
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/56; C09K8/565; E; E21; E21B; E21B43/00; E21B43/32; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS OF SELECTIVELY BLOCKING THE MIGRATION OF AQUEOUS FLUIDS IN A PREMEABLE POROUS BODY COMPRISING INJECTING INTO SAID BODY A LOW POLARITY LIQUID CONTAINING BETWEEN ABOUT 3% AND 50% BY WEIGHT OF AN ORGANIC ACID-ADDITION SALT OF AN N-HIGHER ALKYL SUBSTITUTED-
Claim 2
Dependent Claim
42 words
A PROCESS OF SELECTIVELY BLOCKING THE MIGRATION OF AQUEOUS FLUIDS IN A PREMEABLE POROUS BODY COMPRISING INJECTING INTO SAID BODY A LOW POLARITY LIQUID CONTAINING BETWEEN ABOUT 3% AND 50% BY WEIGHT OF AN ORGANIC ACID-ADDITION SALT OF AN N-HIGHER ALKYL SUBSTITUTED-
References Cited (Backward Citations)
US2452736A
Cited
US2792894A
Cited
US2840584A
Cited
US2779418A
Cited
US2816610A
Cited
US2805720A
Cited
US2876840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |