US3002843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete structure
Assignee: Individual
•
Filing: 1957-10-01
•
Granted: 1961-10-03
•
Expires: 1977-10-01
Abstract
No abstract record available.
Inventors
- 👤 Stocker Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A STRUCTURAL ELEMENT CAPABLE OF RESISTING TEMPERATURES OF AT LEAST 1200*C. WITHOUT CHANGE IN CRYSTALLINE STRUCTURE AND BEING FORMED OF A MIXTURE CONSISTING ESSENTIALLY OF ABOUT 150 PARTS BY WEIGHT OF PORTLAND CEMENT, UP TO ONE PART BY WEIGHT OF CALCIUM CHLORIDE AND ABOUT 615 PARTS BY WEIGHT OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF FOAMED AND UNFOAMED BLAST FURNACE SLAG, ABOUT 300 PARTS BY WEIGHT OF SAID SUBSTANCE HAVING A PARTICLE SIZE OF BETWEEN 0 AND 4 MM., ABOUT 300 PARTS BY WEIGHT OF SAID SUBSTANCE HAVING A PARTICLE SIZE OF BETWEEN 3 AND 12 MM. AND ABOUT 15 PARTS BY WEIGHT OF SAID SUBSTANCE BEING FINELY GROUND.
Claim 2
Dependent Claim
113 words
A STRUCTURAL ELEMENT CAPABLE OF RESISTING TEMPERATURES OF AT LEAST 1200*C. WITHOUT CHANGE IN CRYSTALLINE STRUCTURE AND BEING FORMED OF A MIXTURE CONSISTING ESSENTIALLY OF ABOUT 150 PARTS BY WEIGHT OF PORTLAND CEMENT, UP TO ONE PART BY WEIGHT OF CALCIUM CHLORIDE AND ABOUT 615 PARTS BY WEIGHT OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF FOAMED AND UNFOAMED BLAST FURNACE SLAG, ABOUT 300 PARTS BY WEIGHT OF SAID SUBSTANCE HAVING A PARTICLE SIZE OF BETWEEN 0 AND 4 MM., ABOUT 300 PARTS BY WEIGHT OF SAID SUBSTANCE HAVING A PARTICLE SIZE OF BETWEEN 3 AND 12 MM. AND ABOUT 15 PARTS BY WEIGHT OF SAID SUBSTANCE BEING FINELY GROUND.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |