US2724656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lime-brick and method for its production
Assignee: Atlas Werke AG
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Filing: 1952-06-21
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Granted: 1955-11-22
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Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Gunzelmann Rudolf
- 👤 Erythropel Hermann
- 👤 Kruger Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:12
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S264/00; Y10S264/49
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A LIME BRICK CURED UNDER MOIST HEAT COMPRISING A COMPACT MIXTURE OF AN AMOUNT OF FLY ASH FROM POWDERED COAL COMBUSTION OF APPROXIMATELY 45% BY WEIGHT AND AN AMOUNT OF A GRANULATE OF MELTED ASHES OF 45% BY WEIGHT AND 10% CALCIUM LIME MIXED INITIALLY WITH SUFFICIENT WATER, THE INGREDIENTS BEING MIXED AND MOLDED IN A PRESSING MACHINE IN AN AUTOCLAVE WITH STEAM OF ABOUT 200 POUNDS PER SQUARE INCH PRESSURE FOR APPROXIMATELY THREE HOURS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |