Patent US2652379A successfully refreshed from Google Patents.
US2652379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil additive
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-05-24
•
Granted: 1953-09-15
•
Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 Ross M Hedrick
- 👤 David T Mowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:29
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C09K17/22; C09K17/40; Y; Y10; Y10S; Y10S106/00; Y10S106/90; Y10S260/00; Y10S260/14; Y10S47/00; Y10S47/10; Y10S71/00; Y10S71/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD OF IMPROVING THE TILTH OF SOLIDS OF THE GROUP CONSISTING OF CLAY-CONTAINING SOILS, SILT-CONTAINING SOILS, AND SOILS CONTAINING BOTH CLAY AND SILT, WHICH COMPRISES DISPERSING IN THE SOIL A SMALL AMOUNT, NOT TO EXCEED 2% BY WEIGHT, OF A SUBSTANTIALLY LINEAR WATER-SOLUBLE OLEFINIC POLYMER REPRESENTED BY THE STRUCTURAL OLEFINIC
Claim 2
Independent Claim
51 words
THE METHOD OF IMPROVING THE TILTH OF SOLIDS OF THE GROUP CONSISTING OF CLAY-CONTAINING SOILS, SILT-CONTAINING SOILS, AND SOILS CONTAINING BOTH CLAY AND SILT, WHICH COMPRISES DISPERSING IN THE SOIL A SMALL AMOUNT, NOT TO EXCEED 2% BY WEIGHT, OF A SUBSTANTIALLY LINEAR WATER-SOLUBLE OLEFINIC POLYMER REPRESENTED BY THE STRUCTURAL OLEFINIC
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |