US2662022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-hardening water-glass compositions
Assignee: Hoechst AG
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Filing: 1950-11-25
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Granted: 1953-12-08
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Expires: 1970-11-25
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:11
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SELF-HARDENING COMPOSITION INCLUDING A SOLID CONSITUENT AND AN AQUEOUS WATER-GLASS CONSTITUENT CAPABLE OF YIELDING, UPON HARDENING, A CHEMICALLY-STABLE ACID-RESISTANT SOLID, WHEREIN SAID SOLID CONSTITUENT COMPRISES AN INERT FILLER AND 1-5% OF GLYCOLIDE, AND SAID WATER-GLASS CONSTITUENT IS SELECTED FROM THE GROUP WHICH CONSISTS OF SODIUM SILICATE SOLUTIONS HAVING A RATIO OF SIO2 TO NA2O LESS THAN ABOUT 2.75 AND A RATIO OF SIO2 TO H2O HIGHER THAN ABOUT 0.35, AND POTASSIUM SILICATE SOLUTION HAVING A RATIO SIO2 TO K2O LESS THAN ABOUT 2.25 AND A RATIO OF SIO2 TO H2O HIGHER THAN ABOUT 0.35, THE AMOUNT OF SAID WATER-GLASS CONSTITUENT RANGING FROM ABOUT 25 CUBIC CENTIMETERS TO ABOUT 30 CUBIC CENTIMETERS PER 100 GRAMS OF SOLID CONSTITUENT PRESENT IN SAID COMPOSITION.
Claim 2
Dependent Claim
122 words
A SELF-HARDENING COMPOSITION INCLUDING A SOLID CONSITUENT AND AN AQUEOUS WATER-GLASS CONSTITUENT CAPABLE OF YIELDING, UPON HARDENING, A CHEMICALLY-STABLE ACID-RESISTANT SOLID, WHEREIN SAID SOLID CONSTITUENT COMPRISES AN INERT FILLER AND 1-5% OF GLYCOLIDE, AND SAID WATER-GLASS CONSTITUENT IS SELECTED FROM THE GROUP WHICH CONSISTS OF SODIUM SILICATE SOLUTIONS HAVING A RATIO OF SIO2 TO NA2O LESS THAN ABOUT 2.75 AND A RATIO OF SIO2 TO H2O HIGHER THAN ABOUT 0.35, AND POTASSIUM SILICATE SOLUTION HAVING A RATIO SIO2 TO K2O LESS THAN ABOUT 2.25 AND A RATIO OF SIO2 TO H2O HIGHER THAN ABOUT 0.35, THE AMOUNT OF SAID WATER-GLASS CONSTITUENT RANGING FROM ABOUT 25 CUBIC CENTIMETERS TO ABOUT 30 CUBIC CENTIMETERS PER 100 GRAMS OF SOLID CONSTITUENT PRESENT IN SAID COMPOSITION.
References Cited (Backward Citations)
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Cited
US1832752A
Cited
US2069486A
Cited
US2206046A
Cited
DE723584C
Cited
GB551408A
Cited
US2492790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |