US4219362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sag resistant Portland cement compositions
Assignee: Monsanto Co
•
Filing: 1979-02-28
•
Granted: 1980-08-26
•
Expires: 1999-02-28
Abstract
Abstract Cold-water soluble tamarind gum is used to prepare portland cement compositions having improved anti-sag control.
Inventors
- 👤 George T. Colegrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:09
CPC Classifications
C; C04; C04B; C04B24/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
17 words
A cement composition comprising 30-99.5% Portland cement, 0-70% filler, and 0.5 to 3.0% cold-water soluble tamarind gum.
Claim 2
Dependent Claim
17 words
A cement composition comprising 30-99.5% Portland cement, 0-70% filler, and 0.5 to 3.0% cold-water soluble tamarind gum.
Claim 3
Dependent Claim
14 words
A cement composition of claim 1 containing less than 2.0% cold-water soluble tamarind gum.
Claim 4
Dependent Claim
21 words
A cement composition of claim 2 comprising about 49-50% Portland cement, about 49-50% filler, and about 0.5-2% cold-water soluble tamarind gum.
Claim 5
Dependent Claim
18 words
A cement composition of claim 1 comprising about 99% Portland cement and about 1% cold-water soluble tamarind gum.
Claim 6
Dependent Claim
13 words
A dry set mortar comprising a cement composition of claim 1 and water.
Claim 7
Dependent Claim
11 words
A grout comprising a cement composition of claim 1 and water.
Claim 8
Dependent Claim
20 words
A cement composition comprising 30-99.5% Portland cement, 0-70% filler, 0.4-1.2% cellulose derivatives, and 0.001 to 1% cold-water soluble tamarind gum.
Claim 9
Dependent Claim
20 words
A cement composition comprising 30-99.5% Portland cement, 0-70% filler, 0.4-1.2% cellulose derivatives, and 0.001 to 1% cold-water soluble tamarind gum.
Claim 10
Dependent Claim
24 words
A cement composition of claim 7 comprising about 99% Portland cement, about 1% hydroxypropyl methylcellulose, and about 0.1 to 0.5% cold-water soluble tamarind gum.
References Cited (Backward Citations)
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Cited
US2934932A
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US3243307A
Cited
US3486960A
Cited
US3847630A
Cited
US4021257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-26 | 1984-02-25 | 1984-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-26 | 1988-02-25 | 1988-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-26 | 1992-02-25 | 1992-08-26 | $7700.00 | Window Closed / Lapsed |