Patent US4892037A successfully refreshed from Google Patents.
Patent US3062669A successfully refreshed from Google Patents.
US3062669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light weight aerated concrete
Assignee: Individual
•
Filing: 1957-01-28
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Granted: 1962-11-06
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Dilnot Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:40
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; C04B2111/00; C04B2111/20; C04B2111/27; C04B2111/28; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
THE METHOD OF MAKING A FORM RETAINING SELF SUSTAINING BODY WHICH COMPRISES: MIXING FINELY DIVIDED REACTIVE SILICEOUS AND CALCAREOUS MATERIALS AND WATER WITH SUBSTANTIALLY NON-REACTIVE FIBER TO FORM A STABLE SLURRY THE FIBER RANGING IN LENGTH BETWEEN ABOUT THREE-TENTHS TO TWO AND ONE-HALF CENTIMETERS, AND THE WATER BEING BETWEEN ABOUT .4 TO NOT MORE THAN ABOUT 21/2 TIMES THE TOTAL WEIGHT OF THE SOLIDS; INCORPORATING PREFORMED AQUEOUS FOAM INTO THE SLURRY; AND AUTOCLAVING THE SLURRY AT ABOVE ABOUT ONE HUNDRED POUNDS PER SQUARE INCH STEAM PRESSURE TO FORM A FORM RETAINING SELF SUSTAINING BODY WHICH IN THE DRY STATE HAS AN APPARENT DENSITY OF ABOUT 15 TO 40 POUNDS PER CUBIC FOOT AND FIBER CONTRIBUTING TO THE TRANSVERSE STRENGTH OF THE BODY; THE PROPORTION OF FIBER IN THE BODY BEING IN THE RANGEE OF ABOUT ONE-FOURTH POUND TO FIVE POUNDS PER CUBIC FOOT, AND THE GAS CELLS OF THE FOAM BEING IN THE FORM OF SEPHERICAL MACROSCOPIC VOIDS CONSTITUTING ABOUT 16 TO ABOUT 70 PERCENT OF THE VOLUME OF THE BODY.
Claim 2
Independent Claim
171 words
THE METHOD OF MAKING A FORM RETAINING SELF SUSTAINING BODY WHICH COMPRISES: MIXING FINELY DIVIDED REACTIVE SILICEOUS AND CALCAREOUS MATERIALS AND WATER WITH SUBSTANTIALLY NON-REACTIVE FIBER TO FORM A STABLE SLURRY THE FIBER RANGING IN LENGTH BETWEEN ABOUT THREE-TENTHS TO TWO AND ONE-HALF CENTIMETERS, AND THE WATER BEING BETWEEN ABOUT .4 TO NOT MORE THAN ABOUT 21/2 TIMES THE TOTAL WEIGHT OF THE SOLIDS; INCORPORATING PREFORMED AQUEOUS FOAM INTO THE SLURRY; AND AUTOCLAVING THE SLURRY AT ABOVE ABOUT ONE HUNDRED POUNDS PER SQUARE INCH STEAM PRESSURE TO FORM A FORM RETAINING SELF SUSTAINING BODY WHICH IN THE DRY STATE HAS AN APPARENT DENSITY OF ABOUT 15 TO 40 POUNDS PER CUBIC FOOT AND FIBER CONTRIBUTING TO THE TRANSVERSE STRENGTH OF THE BODY; THE PROPORTION OF FIBER IN THE BODY BEING IN THE RANGEE OF ABOUT ONE-FOURTH POUND TO FIVE POUNDS PER CUBIC FOOT, AND THE GAS CELLS OF THE FOAM BEING IN THE FORM OF SEPHERICAL MACROSCOPIC VOIDS CONSTITUTING ABOUT 16 TO ABOUT 70 PERCENT OF THE VOLUME OF THE BODY.
References Cited (Backward Citations)
USRE23228E
Cited
US1702966A
Cited
US2172076A
Cited
US2282190A
Cited
GB531469A
Cited
US2456643A
Cited
US2526066A
Cited
US2547127A
Cited
US2699097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |