US3234154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement composition
Assignee: Dow Chemical Co
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Filing: 1960-12-12
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Granted: 1966-02-08
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Robert C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C04; C04B; C04B24/00; C04B24/04; C04B24/06; C04B24/12; C04B24/16; C04B24/18; C04B28/00; C04B28/02; C09K8/467; C09K8/487; C04B2103/00; C04B2103/20; C04B2103/22; C04B2103/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A HYDRAULIC CEMENT COMPOSITION COMPRISING A HYDRAULIC CEMENT; A FLUID-LOSS ADDITAMENT SELECTED FROM THE GROUP CONSISTING OF WATER-WOLUBLE SULFONATED POLYSTYRENE AND SULFONATED POLYVINYLTOLUENE POLYMERS; A SETTING RETARDANT SELECTED FROM THE GROUP CONSISTING OF GLUCOHEPTONIC ACIDS, WATER-SOLUBLE SALTS THEREO FAND MIXTURES OF SAID ACIDS AND SALTS; AND FROM .003 TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF DRY HYDRAULIC CEMENT OF A LIGNIN AMINE HAVING AT LEAS TONE LOWER ALKYL AMINE GROUP PER THOUSAND MOLECULAR WEIGHT.
Claim 2
Dependent Claim
78 words
A HYDRAULIC CEMENT COMPOSITION COMPRISING A HYDRAULIC CEMENT; A FLUID-LOSS ADDITAMENT SELECTED FROM THE GROUP CONSISTING OF WATER-WOLUBLE SULFONATED POLYSTYRENE AND SULFONATED POLYVINYLTOLUENE POLYMERS; A SETTING RETARDANT SELECTED FROM THE GROUP CONSISTING OF GLUCOHEPTONIC ACIDS, WATER-SOLUBLE SALTS THEREO FAND MIXTURES OF SAID ACIDS AND SALTS; AND FROM .003 TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF DRY HYDRAULIC CEMENT OF A LIGNIN AMINE HAVING AT LEAS TONE LOWER ALKYL AMINE GROUP PER THOUSAND MOLECULAR WEIGHT.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |