US3022249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well fracturing liquid
Assignee: Dow Chemical Co
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Filing: 1959-08-12
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Granted: 1962-02-20
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Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 John F Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:33
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN AQUEOUS WELL TREATING COMPOSITION COMPRISING A MIXTURE CONSISTING OF BETWEEN 9 AND 2.3 PARTS BY WEIGHT OF SOYA FLOUR AND 1 PART BY WEIGHT OF A LIGNIN COMPOUND SELECTED FROM THE CLASS CONSISTING OF LIGNIN, SULFONATED LIGNIN, ALKALI METAL SALTS OF LIGNIN, AND ALKALI METAL SALTS OF LIGNOSULFONIC ACID, IN AN AMOUNT OF BETWEEN 10 AND 100 POUNDS OF SAID MIXTURE PER 1000 GALLONS OF SAID AQUEOUS COMPOSITION.
Claim 2
Dependent Claim
69 words
AN AQUEOUS WELL TREATING COMPOSITION COMPRISING A MIXTURE CONSISTING OF BETWEEN 9 AND 2.3 PARTS BY WEIGHT OF SOYA FLOUR AND 1 PART BY WEIGHT OF A LIGNIN COMPOUND SELECTED FROM THE CLASS CONSISTING OF LIGNIN, SULFONATED LIGNIN, ALKALI METAL SALTS OF LIGNIN, AND ALKALI METAL SALTS OF LIGNOSULFONIC ACID, IN AN AMOUNT OF BETWEEN 10 AND 100 POUNDS OF SAID MIXTURE PER 1000 GALLONS OF SAID AQUEOUS COMPOSITION.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |