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US3817767A
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US
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Cementitious compositions
Assignee: Dow Chemical Co
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Filing: 1972-09-14
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Granted: 1974-06-18
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Expires: 1992-09-14
Abstract
Abstract AN IMPROVED CEMENTITIOUS COMPOSITION CURABLE BY HYDRATION AHD HAVING ENHANCED PROPERTIES, SUCH AS LESS WATER ABSORBENCY AND GREATER STRENGH, COMPRISES A CEMENTITIOUS MATERIAL AND A SMALL BUT EFFECTIVE AMOUNT OF ALKENYL SUBSTITUTED SUCCINIC ACID OR ANHYDRIDE.
Inventors
- 👤 K Bozer
- 👤 R Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:31
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/04
Claims Analysis
Total Claims: 0
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |