US2815293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating finishing cement and structural material
Assignee: EDNA G GETHEN
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Filing: 1956-01-31
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Granted: 1957-12-03
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Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 John V Randall
- 👤 Edna G Gethen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:22
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
79 words
AN INSULATING FINISHING CEMENT CONSISTING ESSENTIALLY OF ABOUT 20% TO 40% BY WEIGHT OF MINERAL WOOL, ABOUT 10% TO 35% BY WEIGHT OF WHITE PORTLAND CEMENT, ABOUT 10% TO 50% BY WEIGHT OF POZZOLAN COMPONENT COMPRISING FLY ASH AND CLAY SELECTED FROM THE GROUP CONSISTING OF THE KAOLIN CLAY GROUP AND THE MICACEOUS CLAY GROUP, AND ABOUT 5% TO 30% BY WEIGHT OF A MONTMORILLONITE CLAY, SAID FLY ASH COMPRISING AT LEAST 5% BY WEIGHT OF THE TOTAL COMPOSITION.
Claim 2
Dependent Claim
79 words
AN INSULATING FINISHING CEMENT CONSISTING ESSENTIALLY OF ABOUT 20% TO 40% BY WEIGHT OF MINERAL WOOL, ABOUT 10% TO 35% BY WEIGHT OF WHITE PORTLAND CEMENT, ABOUT 10% TO 50% BY WEIGHT OF POZZOLAN COMPONENT COMPRISING FLY ASH AND CLAY SELECTED FROM THE GROUP CONSISTING OF THE KAOLIN CLAY GROUP AND THE MICACEOUS CLAY GROUP, AND ABOUT 5% TO 30% BY WEIGHT OF A MONTMORILLONITE CLAY, SAID FLY ASH COMPRISING AT LEAST 5% BY WEIGHT OF THE TOTAL COMPOSITION.
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |