Patent US3183105A successfully refreshed from Google Patents.
US3183105A
Expired / Lapsed
US
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Cement additive composed of a mixture of methyl acetate and methyl alcohol
Assignee: WR Grace and Co
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Filing: 1963-10-18
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Granted: 1965-05-11
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Expires: 1983-10-18
Abstract
No abstract record available.
Inventors
- 👤 Frank G Serafin
- 👤 Jr Vance H Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:33
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/02; C04B24/04; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A DRY PORTLAND CEMENT CONTAINING ABOUT 0.005% TO 0.05% BY WEIGHT OF AN ADDITIVE CONSISTING OF A MIXTURE OF 78% TO 82% BY WEIGHT OF METHYL ACETATE AND 22% TO 18% BY WEIGHT OF METHYL ALCOHOL.
Claim 2
Dependent Claim
36 words
A DRY PORTLAND CEMENT CONTAINING ABOUT 0.005% TO 0.05% BY WEIGHT OF AN ADDITIVE CONSISTING OF A MIXTURE OF 78% TO 82% BY WEIGHT OF METHYL ACETATE AND 22% TO 18% BY WEIGHT OF METHYL ALCOHOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |