Patent US4611578A successfully refreshed from Google Patents.
US3769250A
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Epoxy hydraulic cement composition
Assignee: Resyn Corp
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Filing: 1970-09-10
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Granted: 1973-10-30
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Expires: 1990-09-10
Abstract
Abstract THE INVENTION RELATES TO A HYDRAULIC CEMENT COMPOSITION WHICH HAS ADMIXED THEREIN AN AQUEOUS EPOXY EMULSION COMPOSITION OF AN EPOXY RESIN AND AN EMULSIFYING AND CURING AGENT FOR THE RESIN IN AMOUNT SUFFICIENT TO ENHANCE THE PROPERTIES AND MOST NOTABLY THE TENSILE, FLEXURAL AND COMPRESSIVE STRENGTH OF THE CEMENT, WHEN THE CEMENT IS CURED. THE EMULSIFYING AND CURING AGENT USED IS OF A PARTICULAR KIND, NAMELY, A REACTION PRODUCT OF A PRIMARY OR SECONDARY AMINE WITH A DIGLYCIDYL ETHER OF A POLYGLYCOL. SUCH CURING AGENTS ARE DISCLOSED IN MY COPENDING APPLICATIONS SER. NO. 873,501, FILED NOV. 3, 1969, NOW ABANDONED AND SER. NO. 53,010, A CONTINUATION THEREOF, FILED JULY 7, 1970.
Inventors
- 👤 O Nikles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/182; C08G59/184; C04; C04B; C04B24/00; C04B24/24; C04B24/28; C04B24/281
Claims Analysis
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |