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Patent US2947643A successfully refreshed from Google Patents.
US2947643A
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Hydraulic cements
Assignee: Individual
•
Filing: 1955-12-19
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Granted: 1960-08-02
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/14; C04B7/147; C04B7/153; C04B7/21; Y; Y02; Y02P; Y02P40/00; Y02P40/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
HYDRAULIC CEMENTS CONTAINING: (A) FROM 75.0% TO 92.5% OF WATER-GRANULATED BLASTFURNACE SLAG ASSAYING FROM 4.3% TO 12.5% OF MAGNESIUM OXIDE CONTENT, (B) FROM 0.1% TO 4.0% OF AN ALKALINE ACTIVATOR CHOSEN FROM THE GROUP CONSISTING OF CALCIUM OXIDE, CALCIUM HYDROXIDE AND PORTLAND CEMENT, (C) THE REMAINDER CONTAINING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ANHYDRITE, GYPSUM AND CALCIUM SULFATE, THE CEMENT BEING GROUND TO A FINENESS OF FROM 4000 TO 10,000 SQUARE CENTIMETERS PER GRAM BY THE BLAINE AIR PERMEABILITY METHOD.
Claim 2
Dependent Claim
83 words
HYDRAULIC CEMENTS CONTAINING: (A) FROM 75.0% TO 92.5% OF WATER-GRANULATED BLASTFURNACE SLAG ASSAYING FROM 4.3% TO 12.5% OF MAGNESIUM OXIDE CONTENT, (B) FROM 0.1% TO 4.0% OF AN ALKALINE ACTIVATOR CHOSEN FROM THE GROUP CONSISTING OF CALCIUM OXIDE, CALCIUM HYDROXIDE AND PORTLAND CEMENT, (C) THE REMAINDER CONTAINING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ANHYDRITE, GYPSUM AND CALCIUM SULFATE, THE CEMENT BEING GROUND TO A FINENESS OF FROM 4000 TO 10,000 SQUARE CENTIMETERS PER GRAM BY THE BLAINE AIR PERMEABILITY METHOD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |