US2493930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementitious composition
Assignee: Individual
•
Filing: 1946-08-22
•
Granted: 1950-01-10
•
Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:25
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/12; C04B22/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION OF MATTER COMPRISING A DICALCIUM MONO-SILICATE CEMENTITIOUS MATERIAL ADAPTED TO LIBERATE CALCIUM HYDROXIDE WHEN HYDRATED, AND FROM ABOUT 0.5% TO ABOUT 4.0% BY WEIGHT OF CRYOLITE INTIMATELY ASSOCIATED THEREWITH.
Claim 2
Dependent Claim
31 words
A COMPOSITION OF MATTER COMPRISING A DICALCIUM MONO-SILICATE CEMENTITIOUS MATERIAL ADAPTED TO LIBERATE CALCIUM HYDROXIDE WHEN HYDRATED, AND FROM ABOUT 0.5% TO ABOUT 4.0% BY WEIGHT OF CRYOLITE INTIMATELY ASSOCIATED THEREWITH.
References Cited (Backward Citations)
US897160A
Cited
US1363045A
Cited
US1716527A
Cited
US1904640A
Cited
US2174051A
Cited
US2071681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |