US3271307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil well treatment
Assignee: Baker Petrolite LLC
•
Filing: 1963-08-06
•
Granted: 1966-09-06
•
Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Woodrow J Dickson
- 👤 Fred W Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C09; C09K; C09K8/00; C09K8/52; C09K8/528; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10L1/222; C10L1/2222; C10L1/2225; C10L1/224; C10L1/228; C10L1/2283; C10L1/232; C10L1/234; C10L1/238; C10L1/2383; C10M; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR INJECTING WATER INTO AN UNDERGROUND FORMATION CHARACTERIZED BY EMPLOYING AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) A BRANCHED POLYALKYLENEPOLYAMINE CONTAINING AT LEAST THREE PRIMARY AMINO GROUPS AND AT LEAST ONE TERTIARY AMINO GROUP AND HAVING THE FROMULA
Claim 2
Dependent Claim
46 words
A PROCESS FOR INJECTING WATER INTO AN UNDERGROUND FORMATION CHARACTERIZED BY EMPLOYING AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) A BRANCHED POLYALKYLENEPOLYAMINE CONTAINING AT LEAST THREE PRIMARY AMINO GROUPS AND AT LEAST ONE TERTIARY AMINO GROUP AND HAVING THE FROMULA
References Cited (Backward Citations)
US2272489A
Cited
US2243329A
Cited
US2403960A
Cited
US2470830A
Cited
US2800962A
Cited
US2802531A
Cited
US3133941A
Cited
US3060210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |