US3147128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed magnesium oxysulfate cement and process
Assignee: Dow Chemical Co
•
Filing: 1961-12-04
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Granted: 1964-09-01
•
Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Bob R Harrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:00
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A FOAMED MAGNESIUM OXYSULFATE CEMENT, WHICH CONSISTS ESSENTIALLY OF FROM 2K TO 40 WEIGHT PERCENT OF MAGNESIUM OXIDE, 11 TO 15 WEIGHT PERCENT OF MAGNESIUM SULFATE, 0.5 TO 1.5 WEIGHT PERCENT OF A NON-IONIC WETTING AGENT, FROM 0.1 TO 1 WERIGHT LPERCENT OF MAGNESIUM CHLORIDE, AND THE BALANCE WATER OF HYDRATION.
Claim 2
Dependent Claim
51 words
A FOAMED MAGNESIUM OXYSULFATE CEMENT, WHICH CONSISTS ESSENTIALLY OF FROM 2K TO 40 WEIGHT PERCENT OF MAGNESIUM OXIDE, 11 TO 15 WEIGHT PERCENT OF MAGNESIUM SULFATE, 0.5 TO 1.5 WEIGHT PERCENT OF A NON-IONIC WETTING AGENT, FROM 0.1 TO 1 WERIGHT LPERCENT OF MAGNESIUM CHLORIDE, AND THE BALANCE WATER OF HYDRATION.
References Cited (Backward Citations)
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Cited
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Cited
US2598981A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |