Patent US2542364A successfully refreshed from Google Patents.
US2542364A
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Hydraulic cements and method of making
Assignee: Sika Schweiz AG
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Filing: 1946-12-13
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Granted: 1951-02-20
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Expires: 1966-12-13
Abstract
No abstract record available.
Inventors
- 👤 Fritz A Schenker
- 👤 Ammann Alphons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:52
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/04; C04B24/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF IMPROVING THE FROST-RESISTANCE OF STRUCTURES FORMED FROM CONCRETE OR MORTAR MIXES HAVING A HYDRAULIC CEMENT BINDING AGENT, WHICH COMPRISES INCORPORATING A GAS-ENTRAINING AGENT AND FLUIDITY-INCREASING AGENT AT ANY STAGE PRIOR TO THE COMPLETION OF THE MIXING OF THE COMPONENTS CONSTITUTING THE MIX, THE FLUIDITY INCREASING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF TARTARIC ACID, CITRIC ACID, SACCHARIC ACID, AND TETRAHYDROXY ADIPIC ACID.
Claim 2
Independent Claim
66 words
A METHOD OF IMPROVING THE FROST-RESISTANCE OF STRUCTURES FORMED FROM CONCRETE OR MORTAR MIXES HAVING A HYDRAULIC CEMENT BINDING AGENT, WHICH COMPRISES INCORPORATING A GAS-ENTRAINING AGENT AND FLUIDITY-INCREASING AGENT AT ANY STAGE PRIOR TO THE COMPLETION OF THE MIXING OF THE COMPONENTS CONSTITUTING THE MIX, THE FLUIDITY INCREASING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF TARTARIC ACID, CITRIC ACID, SACCHARIC ACID, AND TETRAHYDROXY ADIPIC ACID.
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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |