US2927639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfactant treatment of oil and gas wells
Assignee: JBS USA LLC
•
Filing: 1956-11-23
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Granted: 1960-03-08
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Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Albert G Schuessler
- 👤 Charles B Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:25
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A COMPOSITION ADAPTED FOR TREATMENT OF OIL AND GAS BEARING FORMATIONS TO INCREASE THE PRODUCTIVITY THEREOF COMPRISING AN ALKALI METAL SALT OF SULFATED SPERM OIL AS THE MAJOR CONSTITUENT AND AS A MINOR CONSTITUENT AN OIL WETTING AGENT SELECTED FROM THE GROUP CONSISTING OF LEAD PETROLEUM SULFONATE, AN ALKYL ARYL SULFONATE, AND AMINE ALKYL ARYL SULFONATE, A CARBOXYLIC ACID SALT OF AN AMINO ALKY AMIDE, AND MIXTURES THEREOF, THE CARBOXYLIC ACID RADICALS OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF C12-C20 FATTY ACID RADICALS, ROSIN ACID RADICALS AND MIXTURES THEREOF.
Claim 2
Dependent Claim
92 words
A COMPOSITION ADAPTED FOR TREATMENT OF OIL AND GAS BEARING FORMATIONS TO INCREASE THE PRODUCTIVITY THEREOF COMPRISING AN ALKALI METAL SALT OF SULFATED SPERM OIL AS THE MAJOR CONSTITUENT AND AS A MINOR CONSTITUENT AN OIL WETTING AGENT SELECTED FROM THE GROUP CONSISTING OF LEAD PETROLEUM SULFONATE, AN ALKYL ARYL SULFONATE, AND AMINE ALKYL ARYL SULFONATE, A CARBOXYLIC ACID SALT OF AN AMINO ALKY AMIDE, AND MIXTURES THEREOF, THE CARBOXYLIC ACID RADICALS OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF C12-C20 FATTY ACID RADICALS, ROSIN ACID RADICALS AND MIXTURES THEREOF.
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) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |