US2946695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-hardening alkali- and acid-proof water glass cements capable of swelling
Assignee: Hoechst AG
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Filing: 1957-04-02
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Granted: 1960-07-26
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Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
- 👤 Lorentz Guido Max Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/42; C01B33/26; C01B33/40; C01B33/46; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
SELF-HARDENING ALKALI-PROOF AND ACID-PROOF WATER GLASS CEMENT POWDER COMPOSITION CAPABLE OF SWELLING CONSISTING ESSENTIALLY OF ALKALI-WATER GLASS, 0.1 TO 10% OF A CYANAMIDE OF A BIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND ALKALINE EARTH METALS, AN INERT INORGANIC FILLING MATERIAL AND 5 TO 50% OF A INTERED AND FINELY TRITURATED CALCIUM-ALUMINUMIRON-SILICATE, WHEREIN THE ABOVE PERCENTAGE FIGURES ARE CALCULATED UPON THE WEIGHT OF THE CEMENT POWDER AND SAID CALCIUM-ALUMINUM-IRON-SILICATE CONSISTS OF
Claim 2
Dependent Claim
73 words
SELF-HARDENING ALKALI-PROOF AND ACID-PROOF WATER GLASS CEMENT POWDER COMPOSITION CAPABLE OF SWELLING CONSISTING ESSENTIALLY OF ALKALI-WATER GLASS, 0.1 TO 10% OF A CYANAMIDE OF A BIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND ALKALINE EARTH METALS, AN INERT INORGANIC FILLING MATERIAL AND 5 TO 50% OF A INTERED AND FINELY TRITURATED CALCIUM-ALUMINUMIRON-SILICATE, WHEREIN THE ABOVE PERCENTAGE FIGURES ARE CALCULATED UPON THE WEIGHT OF THE CEMENT POWDER AND SAID CALCIUM-ALUMINUM-IRON-SILICATE CONSISTS OF
References Cited (Backward Citations)
GB275234A
Cited
GB437718A
Cited
GB464638A
Cited
US2269096A
Cited
US2323029A
Cited
GB615405A
Cited
US2839416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |