US2502418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementitious binder
Assignee: Armstrong World Industries Inc
•
Filing: 1945-12-13
•
Granted: 1950-04-04
•
Expires: 1965-12-13
Abstract
No abstract record available.
Inventors
- 👤 Conral C Callis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:37
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/10; C04B12/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A CEMENTITIOUS BINDER MATERIAL CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED BY REACTING AT A TEMPERATURE BETWEEN ABOUT 32*F. AND ABOUT 125*F., A WATER SLURRY OF ABOUT THREE MOLS OF HYDRATED ALKALINE EARTH OXIDE, CALCULATED AS ALKALINE EARTH OXIDE, AND ABOUT TWO MOLS OF AN ALKALI METAL ALUMINATE WHICH IS REACTIVE WITH THE HYDRAFTED ALKALINE EARTH OXIDE AT SUCH TEMPERATURE.
Claim 2
Dependent Claim
59 words
A CEMENTITIOUS BINDER MATERIAL CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED BY REACTING AT A TEMPERATURE BETWEEN ABOUT 32*F. AND ABOUT 125*F., A WATER SLURRY OF ABOUT THREE MOLS OF HYDRATED ALKALINE EARTH OXIDE, CALCULATED AS ALKALINE EARTH OXIDE, AND ABOUT TWO MOLS OF AN ALKALI METAL ALUMINATE WHICH IS REACTIVE WITH THE HYDRAFTED ALKALINE EARTH OXIDE AT SUCH TEMPERATURE.
References Cited (Backward Citations)
US2396246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |