US3126291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Taaiv
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:40
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B24/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CEMENT COMPOSITION COMPRISING A HYDRAULIC CEMENT AND AT LEAST 0.01%, BY WEIGHT OF THE CEMENT, OF AN ADDITIVE CONSISTING ESSENTIALLY OF A WATER SOLUBLE SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
Claim 2
Dependent Claim
49 words
A CEMENT COMPOSITION COMPRISING A HYDRAULIC CEMENT AND AT LEAST 0.01%, BY WEIGHT OF THE CEMENT, OF AN ADDITIVE CONSISTING ESSENTIALLY OF A WATER SOLUBLE SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |