US3190762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of silanes as concrete additives
Assignee: Dow Silicones Corp
•
Filing: 1963-01-28
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Granted: 1965-06-22
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Barber C Carlson
- 👤 Robert C Hartlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/40; C04B24/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD WHICH COMPRISES INCORPORATING IN A CONCRETE MIX FROM 0.05 TO 3 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE PORTLAND CEMENT IN THE CONCRETE OF A SILANE OF THE FORMULA ZSI(OR'')3, WHEREIN Z IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON GROUPS AND SUBSTITUTED HYDROCARBON GROUPS IN WHICH THE SUBSTITUENT IS BONDED TO THE SILICON ATOM THROUGH AT LEAST ONE CARBON ATOM, AND R'' IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF FROM 1 TO 3 INCLUSIVE CARBON ATOMS, -CH2CH2OR'''''' AND -CH2CH2OH WHERE R''" IS AN ALIPHATIC HYDROCARBON RADICAL OF 1 TO 3 INCLUSIVE CARBON ATOMS, WHEREBY AN IMPROVED CONCRETE IS OBTAINED.
Claim 2
Independent Claim
109 words
A METHOD WHICH COMPRISES INCORPORATING IN A CONCRETE MIX FROM 0.05 TO 3 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE PORTLAND CEMENT IN THE CONCRETE OF A SILANE OF THE FORMULA ZSI(OR'')3, WHEREIN Z IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON GROUPS AND SUBSTITUTED HYDROCARBON GROUPS IN WHICH THE SUBSTITUENT IS BONDED TO THE SILICON ATOM THROUGH AT LEAST ONE CARBON ATOM, AND R'' IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF FROM 1 TO 3 INCLUSIVE CARBON ATOMS, -CH2CH2OR'''''' AND -CH2CH2OH WHERE R''" IS AN ALIPHATIC HYDROCARBON RADICAL OF 1 TO 3 INCLUSIVE CARBON ATOMS, WHEREBY AN IMPROVED CONCRETE IS OBTAINED.
References Cited (Backward Citations)
US2491487A
Cited
FR1207978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |