US2864718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workability of clay soils
Assignee: MONSAUTO CHEMICAL Co
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Filing: 1957-04-15
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Granted: 1958-12-16
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Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 John W Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:49
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD FOR THE IMPROVEMENT OF THE WORKABILITY OF CLAY-CONTAINING SOILS COMPRISING THE DISTRIBUTION IN CLAY SOILS IN INTIMATE ADMIXTURE THEREWITH OF FROM ABOUT 0.05 TO ABOUT 2 WEIGHT PERCENT, BASED ON THE DRY WEIGHT OF THE SOIL, OF A TERTIARY-ALKYLMERCAPTAN-ETHYLENE OXIDE CONDENSATION PRODUCT DEFINED BY THE STRUCTURAL FORMULA RS(CH2CH2O)NH, WHEREIN R IS A TERTIARY-ALKYL RADICAL CONTAINING FROM 8 TO 16 CARBON ATOMS AND N IS A NUMBER FROM 2 TO 20.
Claim 2
Independent Claim
72 words
A METHOD FOR THE IMPROVEMENT OF THE WORKABILITY OF CLAY-CONTAINING SOILS COMPRISING THE DISTRIBUTION IN CLAY SOILS IN INTIMATE ADMIXTURE THEREWITH OF FROM ABOUT 0.05 TO ABOUT 2 WEIGHT PERCENT, BASED ON THE DRY WEIGHT OF THE SOIL, OF A TERTIARY-ALKYLMERCAPTAN-ETHYLENE OXIDE CONDENSATION PRODUCT DEFINED BY THE STRUCTURAL FORMULA RS(CH2CH2O)NH, WHEREIN R IS A TERTIARY-ALKYL RADICAL CONTAINING FROM 8 TO 16 CARBON ATOMS AND N IS A NUMBER FROM 2 TO 20.
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |