US2822643A
Expired / Lapsed
US
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Soil conditioning and stabilizing with a composition comprising low molecular weight dextran
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1953-08-14
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Granted: 1958-02-11
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Everette E Witt
- 👤 Leo J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:47
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/32; C08; C08B; C08B37/00; C08B37/0006; C08B37/0009; C08B37/0021; C09K17/40; C12; C12N; C12N1/00; C12N1/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
IN THE CONDITIONING AND STABILIZING OF SOIL FOR PLANT HUSBANDRY AND COMPRISING SAAND, SILT AND CLAY, USING DEXTRAN AS THE SOIL CONDITIONING AND STABILIZING AGENT, THE IMPROVEMENT WHICH COMPRISES PREFERENTIALLY AND SELECTIVELY BINDING THE COARSE SAND PARTICLES INTO SMALL, WORK, ABLE AGGREGATES BY MIXTING WITH THE SOIL, IN THE PRESENCE OF MOISTURE, HYDRATABLE DEXTRAN HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 5,000 AND 50,000, DETERMINED BY LIGHT SCATTERING MEASUREMENTS, AND PREFERENTIALLY AND SELECTTIVELY BINDING THE FINE CLAY SLIT PARTICLES INTO SMALL, WORKABLE AGGREGATES BY MIXING WITH THE SOIL, IN THE PRESENCE OF MOISTURE, HYDRATABLE DEXTRAN HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 100,000, DETERMINED BY LIGHT SCATTERING MEASUREMENTS.
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) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |