US2780888A
Expired / Lapsed
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Treatment of soil with soil conditioning agents containing carboxymethyl dextran
Assignee: Midland Chemical Corp
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Filing: 1955-02-18
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Granted: 1957-02-12
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Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
- 👤 Everett E Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:30
CPC Classifications
A; A01; A01G; A01G7/00; C; C05; C05F; C05F11/00; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/32; C09K17/40; Y; Y10; Y10S; Y10S71/00; Y10S71/903
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
THE METHOD OF CONDITIONING AND STABILIZING SOIL WHICH COMPRISES ADDING TO THE SOIL A CARBOXYMETHYL DEXTRAN AND INSURING SUFFICIENT MOISTURE IN THE SOIL TO CAUSE SWELLING AND HYDRATION OF THE CARBOXYMETHYL DEXTRAN IN CONTACT WITH THE SOIL, FROM A MATRIX OF THE CARBOXYMETHYL DEXTRAN WITH THE SOIL PARTICLES, AND BIND THE PARTICLES INTO RELATIVELY SMALL, READILY WORKABLE AGGREGATES.
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) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |