US2876123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete additives, concrete mixtures and processes for producing such mixtures
Assignee: Individual
•
Filing: 1956-10-15
•
Granted: 1959-03-03
•
Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 John V Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF PORTLAND CEMENT AND AN ADDITIVE, THE ADDITIVE CONSISTING ESSENTIALLY OF WATER SWELLING COLLODIAL CLAY MATERIAL AND AT LEAST ONE SILICATE SELECTED FROM THE CLASS CONSISTING OF THE WATER SOLUBLE SILICATES OF SODIUM AND POTASSIUM, THE WATER SWELLING COLLOIDAL CLAY MATERIAL BEING PRESENT WITHIN A RANGE OF 1/4 PART TO 2 PARTS BY WEIGHT AND THE WATER SOLUBLE SILICATE BEING PRESENT WITHIN A RANGE OF 1 PART TO 5 PARTS BY WEIGHT, THE WEIGHTS OF WATER SWELLING COLLOIDAL CLAY MATERIAL AND WATER SOLUBLE SILICATE BEING BASED UPON 94 PARTS OF PORTLAND CEMENT BY WEIGHT.
Claim 2
Dependent Claim
99 words
COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF PORTLAND CEMENT AND AN ADDITIVE, THE ADDITIVE CONSISTING ESSENTIALLY OF WATER SWELLING COLLODIAL CLAY MATERIAL AND AT LEAST ONE SILICATE SELECTED FROM THE CLASS CONSISTING OF THE WATER SOLUBLE SILICATES OF SODIUM AND POTASSIUM, THE WATER SWELLING COLLOIDAL CLAY MATERIAL BEING PRESENT WITHIN A RANGE OF 1/4 PART TO 2 PARTS BY WEIGHT AND THE WATER SOLUBLE SILICATE BEING PRESENT WITHIN A RANGE OF 1 PART TO 5 PARTS BY WEIGHT, THE WEIGHTS OF WATER SWELLING COLLOIDAL CLAY MATERIAL AND WATER SOLUBLE SILICATE BEING BASED UPON 94 PARTS OF PORTLAND CEMENT BY WEIGHT.
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |