US2762785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cements comprising an aqueous solution of an alkali metal silicate and a polysiloxane which contains hydrocarbonoxy groups
Assignee: Dow Chemical Co
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Filing: 1954-03-08
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Granted: 1956-09-11
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:47
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
AN ACID RESISTANT CEMENT CONSISTING ESSENTIALLY OF AN AQUEOUS WATER-GLASS SOLUTION AND FROM 3 TO 30% BY WEIGHT BASED ON THE WEIGHT OF THE ALKALI METAL SILICATE IN THE WATER-GLASS SOLUTION OF AN ALIPHATIC HYDROCARBONOXY SUBSTITUTED SILOXANE IN WHICH AT LEAST A MAJOR PORTION OF THE SILICON ATOMS ARE CONNECTED BY SIOSI LINKAGES AND ANY REMAINING LINKAGES ARE SELECTED FROM THE GROUP CONSISTING OF SISI AND SIR''SI LINKAGES WHERE R'' IS A DIVALENT HYDROCARBON RADICAL, THE REMAINING VALENCES OF THE SILICON ATOMS IN SAID SILOXANE BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS IN THE AMOUNT OF ON THE AVERAGE FROM 1 TO 1.5 SAID RADICALS PER SILICON ATOM AND RADICALS OF THE FORMULA OR" IN WHICH R" IS AN ALIPHATIC HYDROCARBON RADICAL, IN AMOUNT OF ON THE AVERAGE FROM .03 TO 2 OR" RADICALS PER SILICON ATOM.
Claim 2
Dependent Claim
136 words
AN ACID RESISTANT CEMENT CONSISTING ESSENTIALLY OF AN AQUEOUS WATER-GLASS SOLUTION AND FROM 3 TO 30% BY WEIGHT BASED ON THE WEIGHT OF THE ALKALI METAL SILICATE IN THE WATER-GLASS SOLUTION OF AN ALIPHATIC HYDROCARBONOXY SUBSTITUTED SILOXANE IN WHICH AT LEAST A MAJOR PORTION OF THE SILICON ATOMS ARE CONNECTED BY SIOSI LINKAGES AND ANY REMAINING LINKAGES ARE SELECTED FROM THE GROUP CONSISTING OF SISI AND SIR''SI LINKAGES WHERE R'' IS A DIVALENT HYDROCARBON RADICAL, THE REMAINING VALENCES OF THE SILICON ATOMS IN SAID SILOXANE BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS IN THE AMOUNT OF ON THE AVERAGE FROM 1 TO 1.5 SAID RADICALS PER SILICON ATOM AND RADICALS OF THE FORMULA OR" IN WHICH R" IS AN ALIPHATIC HYDROCARBON RADICAL, IN AMOUNT OF ON THE AVERAGE FROM .03 TO 2 OR" RADICALS PER SILICON ATOM.
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |