US2629667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retarded set cement and slurries thereof
Assignee: Phillips Petroleum Co
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Filing: 1949-12-27
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Granted: 1953-02-24
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Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 Kaveler Herman Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:09
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/38; C04B24/383; C09; C09K; C09K8/00; C09K8/42; C09K8/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
A CEMENT CAPABLE OF FORMING A FLUID SLURRY WHEN MIXED WITH WATER, SAID CEMENT COMPRISING A HYDRAULIC CEMENT MIXED WITH A MINOR PROPORTION OF AT LEAST ONE OF THE GROUP CONSISTING OF ALKYL HYDROXYALKYL CELLULOSE MIXED ETHERS WHERE THE ALKYL GROUP CONTAINS 1 TO 4 CARBON ATOMS AND THE HYDROXYALKYL GROUP CONTAINS 2 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
57 words
A CEMENT CAPABLE OF FORMING A FLUID SLURRY WHEN MIXED WITH WATER, SAID CEMENT COMPRISING A HYDRAULIC CEMENT MIXED WITH A MINOR PROPORTION OF AT LEAST ONE OF THE GROUP CONSISTING OF ALKYL HYDROXYALKYL CELLULOSE MIXED ETHERS WHERE THE ALKYL GROUP CONTAINS 1 TO 4 CARBON ATOMS AND THE HYDROXYALKYL GROUP CONTAINS 2 TO 4 CARBON ATOMS.
Claim 3
Dependent Claim
19 words
A HYDRAULIC CEMENT SLURRY COMPRISING A HYDRAULIC CEMENT, WATER AND A MINOR PROPORTION OF METHYL HYDROXYETHYL CELLULOSE MIXED ETHER.
Claim 4
Dependent Claim
19 words
A HYDRAULIC CEMENT SLURRY COMPRISING A HYDRAULIC CEMENT, WATER AND A MINOR PROPORTION OF METHYL HYDROXYETHYL CELLULOSE MIXED ETHER.
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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |