US3208226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stabilizing soil
Assignee: Wyeth Holdings LLC
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Filing: 1963-01-10
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Granted: 1965-09-28
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Expires: 1983-01-10
Abstract
No abstract record available.
Inventors
- 👤 John J Falvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/24; C09K17/28; C09K17/40; C09K17/48; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR STABILIZING WATER-PERMEABLE SOIL IN ORDER TO RENDER THE SAME SUBSTANTIALLY WATER-IMPERMEABLE COMPRISING APPLYING AN AQUEOUS DISPERSION OF AN ACID-CATALYZED THERMOSETTING UREA-FORMALDEHYDE RESIN HAVING A SOLIDS CONTENT OF BETWEEN ABOUT 20% AND 40% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE DISPERSION AND HAVING AN INITIAL VISCOSITY BETWEEN ABOUT 5 CENTIPOISES AND 50 CENTIPOISES AND CURING SAID RESIN AT AMBIENT TEMPERATURES TO A SUBSTANTIALLY WATER-INSOLUBLE THERMOSET STATE, WHEREIN SAID RESIN IS CATALYZED WITH AN ACIDIC MATERIAL HAVING A DISSOCIATION CONSTANT BETWEEN ABOUT 10**0 AND 10**-5 AND WHEREIN THE SOIL BEING TREATED HAS AN AVERAGE PARTICLE SIZE SUFFICIENT TO PASS THROUGH A 10 MESH SCREEN BUT RETAINED SUBSTANTIALLY COMPLETELY ON A 200 MESH SCREEN.
Claim 2
Dependent Claim
116 words
A PROCESS FOR STABILIZING WATER-PERMEABLE SOIL IN ORDER TO RENDER THE SAME SUBSTANTIALLY WATER-IMPERMEABLE COMPRISING APPLYING AN AQUEOUS DISPERSION OF AN ACID-CATALYZED THERMOSETTING UREA-FORMALDEHYDE RESIN HAVING A SOLIDS CONTENT OF BETWEEN ABOUT 20% AND 40% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE DISPERSION AND HAVING AN INITIAL VISCOSITY BETWEEN ABOUT 5 CENTIPOISES AND 50 CENTIPOISES AND CURING SAID RESIN AT AMBIENT TEMPERATURES TO A SUBSTANTIALLY WATER-INSOLUBLE THERMOSET STATE, WHEREIN SAID RESIN IS CATALYZED WITH AN ACIDIC MATERIAL HAVING A DISSOCIATION CONSTANT BETWEEN ABOUT 10**0 AND 10**-5 AND WHEREIN THE SOIL BEING TREATED HAS AN AVERAGE PARTICLE SIZE SUFFICIENT TO PASS THROUGH A 10 MESH SCREEN BUT RETAINED SUBSTANTIALLY COMPLETELY ON A 200 MESH SCREEN.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |