Patent US2917778A successfully refreshed from Google Patents.
US2917778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed vessel curing of concrete
Assignee: Coleman Co Inc
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Filing: 1955-12-23
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Granted: 1959-12-22
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Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Luther L Lyon
- 👤 Ray W Qualley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:46
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/02; C04B40/0231
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE PROCESS FOR CURING A WET CONCRETE LINER WITHIN A WATER TANK, THE STEPS OF INTRODUCING INTO THE TANK CO2 IN THE PROPORTION OF ONE CUBIC FOOT OF CO2 AT ATMOSPHERIC PRESSURE AND ROOM TEMPERATURE FOR 40-80 SQUARE FEET OF CONCRETE SURFACE, THE SAID CO2 PROVIDING AT LEAST ABOUT 15% OT THE ATMOSPHERE WITHIN THE TANK, SEALING THE TANK TO EXCLUDE ACCESS OF AIR, AND CURING THE CONCRETE UNDER THE MOIST CONDITIONS PREVAILING IN THE SEALED TANK AND FOR A PERIOD UP TO ABOUT 28 DAYS.
Claim 2
Dependent Claim
87 words
IN THE PROCESS FOR CURING A WET CONCRETE LINER WITHIN A WATER TANK, THE STEPS OF INTRODUCING INTO THE TANK CO2 IN THE PROPORTION OF ONE CUBIC FOOT OF CO2 AT ATMOSPHERIC PRESSURE AND ROOM TEMPERATURE FOR 40-80 SQUARE FEET OF CONCRETE SURFACE, THE SAID CO2 PROVIDING AT LEAST ABOUT 15% OT THE ATMOSPHERE WITHIN THE TANK, SEALING THE TANK TO EXCLUDE ACCESS OF AIR, AND CURING THE CONCRETE UNDER THE MOIST CONDITIONS PREVAILING IN THE SEALED TANK AND FOR A PERIOD UP TO ABOUT 28 DAYS.
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |