Patent US2702965A successfully refreshed from Google Patents.
US2702965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil improvement mixture and process
Assignee: Monsanto Chemicals Ltd
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Filing: 1952-03-22
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Granted: 1955-03-01
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Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
- 👤 Boyd Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:21
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE IMPROVEMENT OF SOIL WHICH COMPRISES SPREADING THEREON A SUBSTANTIALLY DRY INTIMATE MIXTURE OF A PULVERULENT SUBSTANTIALLY WATER-INSOLUBLE POLYMER OF AN ACRYLONITRILE AND A PULVERULENT COMPOUND TAKEN FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES AND CARBONATES OF ALKALINE EARTH METALS, WORKING THE MIXTURE INTO THE SOIL AND WETTING DOWN THE SOIL.
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE IMPROVEMENT OF SOIL WHICH COMPRISES SPREADING THEREON A SUBSTANTIALLY DRY INTIMATE MIXTURE OF A PULVERULENT SUBSTANTIALLY WATER-INSOLUBLE POLYMER OF AN ACRYLONITRILE AND A PULVERULENT COMPOUND TAKEN FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES AND CARBONATES OF ALKALINE EARTH METALS, WORKING THE MIXTURE INTO THE SOIL AND WETTING DOWN THE SOIL.
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) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |