US2499445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic cement composition and method of making same
Assignee: Sika Schweiz AG
•
Filing: 1946-12-13
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Granted: 1950-03-07
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Expires: 1966-12-13
Abstract
No abstract record available.
Inventors
- 👤 Ammann Alphons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
CONCRETE OR MORTAR MIXES CONTAINING A HYDRAULIC CEMENT AND FRO 0.01% TO 1.0%, BY WEIGHT BASED ON THE CEMENT, OF A WATER SOLUBLE ORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF RN(CH2COOH)N, WHEREIN R IS HYDROGEN OR AN ORGANIC RADICAL AND THE N IS AT LEAST 2, AND THE ALKALINE SALTS THEREOF, AND WHICH FORMS SOLUBLE COMPLEX SALTS WITH IONS OF THE ELEMENTS OF THE ALKALINE EARTH METALS.
References Cited (Backward Citations)
US2172076A
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US2174051A
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US2131533A
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US2188767A
Cited
US2382561A
Cited
US2360518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |