US2517993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic cement compositions
Assignee: Dextone Co
•
Filing: 1946-12-23
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Granted: 1950-08-08
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Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Louis L Falco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
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
71 words
AN HYDRAULIC CEMENT COMPOSITION COMPRISING 94 LBS. OF PORTLAND CEMENT, 103 LBS. OF CELLULAR AGGREGATE OF BURNT SHALE OF A SIZE OF 1/2 INCH TO DUST MESH AND WEIGHING APPROXIMATELY 90 LBS. PER CUBIC FOOT, 4 1/2 LBS. OF COTTONWOOD FIBERS OF ABOUT ONE-INCH LENGTH, 20 LBS. OF FLY ASH OF 200 MEASH, 1 PT. OF BUTYL STERATE AND MINERAL SPIRITS MIXED IN SUBSTANTIALLY EQUAL PROPORTIONS, AND 6 GAL. OF WATER.
Claim 2
Dependent Claim
71 words
AN HYDRAULIC CEMENT COMPOSITION COMPRISING 94 LBS. OF PORTLAND CEMENT, 103 LBS. OF CELLULAR AGGREGATE OF BURNT SHALE OF A SIZE OF 1/2 INCH TO DUST MESH AND WEIGHING APPROXIMATELY 90 LBS. PER CUBIC FOOT, 4 1/2 LBS. OF COTTONWOOD FIBERS OF ABOUT ONE-INCH LENGTH, 20 LBS. OF FLY ASH OF 200 MEASH, 1 PT. OF BUTYL STERATE AND MINERAL SPIRITS MIXED IN SUBSTANTIALLY EQUAL PROPORTIONS, AND 6 GAL. OF WATER.
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) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |