US3287145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical admixture for hydraulic cementitious mixtures
Assignee: Union Carbide Corp
•
Filing: 1965-08-10
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Granted: 1966-11-22
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Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Fischer Herman Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A CEMENT COMPOSITION COMPRISING AN HYDRAULIC CEMENT AND FROM ABOUT 0.03 TO ABOUT 3.0 PERCENT, BASED ON THE WEIGHT OF SAID HYDRAULIC CEMENT, OF A WATER-REDUCING ADMIXTURE; SAID ADMIXTURE CONSISTING ESSENTIALLY OF THE PRODUCT RESULTING FROM THE INTIMATE MIXING AT ROOM TEMPERATURE AND ATMOSPHERIC PRESSURE OF (1) A NITROGEN BASE WITH (2) ABOUT 0.5 TO ABOUT 4.0 PARTS PER PART OF SAID NITROGEN BASE BY WEIGHT OF AN ALKYL ARYL POLYOXYETHYLENE ETHER WHEREIN THE ALKYL ARYL MOIETY IS A BENZENE RING SUBSTITUTED BY AT LEAST ONE ALKYL GROUP OF 4 TO 18 CARBON ATOMS AND THE NUMBER OF OXYETHYLENE UNITS IN THE MOLECULE IS FROM ABOUT 6 TO ABOUT 30.
Claim 2
Dependent Claim
110 words
A CEMENT COMPOSITION COMPRISING AN HYDRAULIC CEMENT AND FROM ABOUT 0.03 TO ABOUT 3.0 PERCENT, BASED ON THE WEIGHT OF SAID HYDRAULIC CEMENT, OF A WATER-REDUCING ADMIXTURE; SAID ADMIXTURE CONSISTING ESSENTIALLY OF THE PRODUCT RESULTING FROM THE INTIMATE MIXING AT ROOM TEMPERATURE AND ATMOSPHERIC PRESSURE OF (1) A NITROGEN BASE WITH (2) ABOUT 0.5 TO ABOUT 4.0 PARTS PER PART OF SAID NITROGEN BASE BY WEIGHT OF AN ALKYL ARYL POLYOXYETHYLENE ETHER WHEREIN THE ALKYL ARYL MOIETY IS A BENZENE RING SUBSTITUTED BY AT LEAST ONE ALKYL GROUP OF 4 TO 18 CARBON ATOMS AND THE NUMBER OF OXYETHYLENE UNITS IN THE MOLECULE IS FROM ABOUT 6 TO ABOUT 30.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |