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Patent US2690975A successfully refreshed from Google Patents.
US2690975A
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Hydraulic cement compositions
Assignee: Master Builders Co
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Filing: 1951-11-29
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Granted: 1954-10-05
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Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward W Scripture
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:12
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CEMENT COMPOSITION COMPRISING AN HYDRAULIC CEMENT, FROM ABOUT 0.05% TO 0.25% BY WEIGHT OF THE CEMENT OF DESUGARIZED WASTE SULFITE LIQUOR SOLIDS, AND FROM ABOUT 0.05% TO 0.20% BY WEIGHT OF THE CEMENT OF A MEMBER OF THE CLASS CONSISTING OF THE WATER-SOLUBLE PRODUCTS OF CONDENSATION OF SULFONATED AROMATIC HYDROCARBONS WITH ALIPHATIC ALDEHYDES AND THE WATER-SOLUBLE SALTS OF SAID PRODUCTS.
Claim 2
Dependent Claim
61 words
A CEMENT COMPOSITION COMPRISING AN HYDRAULIC CEMENT, FROM ABOUT 0.05% TO 0.25% BY WEIGHT OF THE CEMENT OF DESUGARIZED WASTE SULFITE LIQUOR SOLIDS, AND FROM ABOUT 0.05% TO 0.20% BY WEIGHT OF THE CEMENT OF A MEMBER OF THE CLASS CONSISTING OF THE WATER-SOLUBLE PRODUCTS OF CONDENSATION OF SULFONATED AROMATIC HYDROCARBONS WITH ALIPHATIC ALDEHYDES AND THE WATER-SOLUBLE SALTS OF SAID PRODUCTS.
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) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |