US2646360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-water-loss cement slurry
Assignee: Phillips Petroleum Co
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Filing: 1949-08-29
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Granted: 1953-07-21
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Expires: 1969-08-29
Abstract
No abstract record available.
Inventors
- 👤 Peggy J Lea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A CEMENT CAPABLE OF FORMING A FLUID AQUEOUS SLURRY WHEN MIXED WITH WATER CONSISTING OF HYDRAULIC CEMENT MIXED WITH FROM 0.1 TO 3 WEIGHT PER CENT OF A L IGNIN SULFONATE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALKALNE EARTH METAL, MAGNESIUM AND AMMONIUM LIGNIN SULIONATES, AND FROM 0.05 TO 3 WEIGHT PER CENT OF AN IONIIZABLE ALKALI METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF INORGANIC ACIDS AND ALKALI METAL HYDORXIDES, SAID PERCENTAGES BEING PERCCENTAGES OF THE WEIGHT OF THE DRY HYDRAULIC CEMENT.
Claim 2
Dependent Claim
89 words
A CEMENT CAPABLE OF FORMING A FLUID AQUEOUS SLURRY WHEN MIXED WITH WATER CONSISTING OF HYDRAULIC CEMENT MIXED WITH FROM 0.1 TO 3 WEIGHT PER CENT OF A L IGNIN SULFONATE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALKALNE EARTH METAL, MAGNESIUM AND AMMONIUM LIGNIN SULIONATES, AND FROM 0.05 TO 3 WEIGHT PER CENT OF AN IONIIZABLE ALKALI METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF INORGANIC ACIDS AND ALKALI METAL HYDORXIDES, SAID PERCENTAGES BEING PERCCENTAGES OF THE WEIGHT OF THE DRY HYDRAULIC CEMENT.
References Cited (Backward Citations)
US2141570A
Cited
US2141571A
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US2081642A
Cited
FR883027A
Cited
GB558563A
Cited
US2469353A
Cited
US2489793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |