US3140956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Products and process for improving performances of cements, motors, and concretes
Assignee: Reynolds Metals Co
•
Filing: 1959-10-26
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Granted: 1964-07-14
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
- 👤 Binford William Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; Y; Y10; Y10S; Y10S588/00; Y10S588/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
CEMENTS, MORTARS AND CONCRETES HAVING AS A BASIS A MEMBER OF THE GROUP CONSISTING OF PORTLAND CEMENT, PORTLAND BLAST FURNACE FLAG CEMENT, POZZOLANA CEMENT, AND PORTLAND-POZZOLANA CEMENT, HAVING ADMIXED THEREWITH FROM ABOUT 2% TO ABOUT 20% BASED ON THE WEIGHT OF THE CEMENT, OF A SUBSTANTIALLY NONHYDROSCOPIC ALUMINOUS SINTER CONSISTING ESSENTIALLY OF SODIUM ALUMINATE HAVING A MOLAR RATIO OF NA2O:AL2O3 BETWEEN ABOUT 0.88 AND ABOUT 1.60 IN ASSOCIATION WITH OXIDES OF IRON, SILICON, AND CALCIUM, SAID SINTER CONTAINING BETWEEN ABOUT 28% AND ABOUT 81% BY WEIGHT OF SODIUM ALUMINATE AND BEING STABLE AND FREE-FLOWING.
Claim 2
Dependent Claim
94 words
CEMENTS, MORTARS AND CONCRETES HAVING AS A BASIS A MEMBER OF THE GROUP CONSISTING OF PORTLAND CEMENT, PORTLAND BLAST FURNACE FLAG CEMENT, POZZOLANA CEMENT, AND PORTLAND-POZZOLANA CEMENT, HAVING ADMIXED THEREWITH FROM ABOUT 2% TO ABOUT 20% BASED ON THE WEIGHT OF THE CEMENT, OF A SUBSTANTIALLY NONHYDROSCOPIC ALUMINOUS SINTER CONSISTING ESSENTIALLY OF SODIUM ALUMINATE HAVING A MOLAR RATIO OF NA2O:AL2O3 BETWEEN ABOUT 0.88 AND ABOUT 1.60 IN ASSOCIATION WITH OXIDES OF IRON, SILICON, AND CALCIUM, SAID SINTER CONTAINING BETWEEN ABOUT 28% AND ABOUT 81% BY WEIGHT OF SODIUM ALUMINATE AND BEING STABLE AND FREE-FLOWING.
References Cited (Backward Citations)
BE521428A
Cited
US2899326A
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US903019A
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US1716527A
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US2099176A
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US2242258A
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US2250186A
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GB632164A
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US2880096A
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US2793128A
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |