US2648645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement composition with additive to reduce water loss from a slurry thereof
Assignee: Universal Atlas Cement Co
•
Filing: 1951-01-24
•
Granted: 1953-08-11
•
Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Boris
- 👤 Norman C Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
A CEMENT COMPOSITION COMPRISING PORTLAND CEMENT, FROM 1 TO 2% POLYVINYL ALCOHOL, FROM GROUP CONSISTING OF ORTHO-BORIC, META-BORIC AND TETRA-BORIC ACIDS AND THE SODIUM AND POTASSIUM SALTS THEREOF, BOTH SAID PERCENTAGES BEING BY WEIGHT OF CEMENT, AND A DEFOAMING AGENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |