US2995457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil stabilization
Assignee: Monsanto Chemicals Ltd
•
Filing: 1958-06-24
•
Granted: 1961-08-08
•
Expires: 1978-06-24
Abstract
No abstract record available.
Inventors
- 👤 John W Lyons
- 👤 William F Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:02
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/02; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF INCREASING THE STABILITY OF CLAY-CONTAINING SOILS CONTAINING FROM ABOUT 10 TO ABOUT 70% OF CLAY, WHICH METHOD COMPRISES (A) THE ADDITION THERETO OF FROM ABOUT 0.5 TO ABOUT 5 WEIGHT PERCENT OF A FLUOROPHOSPHORIC ACID OF THE STRUCTURE
Claim 2
Independent Claim
41 words
A METHOD OF INCREASING THE STABILITY OF CLAY-CONTAINING SOILS CONTAINING FROM ABOUT 10 TO ABOUT 70% OF CLAY, WHICH METHOD COMPRISES (A) THE ADDITION THERETO OF FROM ABOUT 0.5 TO ABOUT 5 WEIGHT PERCENT OF A FLUOROPHOSPHORIC ACID OF THE STRUCTURE
References Cited (Backward Citations)
US2212574A
Cited
US2664398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |