US2745815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for the improvement of soil structure
Assignee: Dow Chemical Co
•
Filing: 1953-01-02
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Granted: 1956-05-15
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Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Dorsey R Mussell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:40
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/12; Y; Y10; Y10S; Y10S260/00; Y10S260/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD FOR THE IMPROVEMENT OF SOIL STRUCTURE WHICH COMPRISES DISTRIBUTING IN THE SOIL AND IN INTIMATE ADMIXTURE THEREWITH A WATER-SOLUBLE POLYTHYLENEIMINE, SAID POLYETHYLENEIMINE HAVING A VISCOSITY FOR AN AQUEOUS 25 PERCENT SOLUTION OF AT LEAST 20 CENTISTOKES AT A TEMPERATURE OF 25* C.
Claim 2
Independent Claim
44 words
A METHOD FOR THE IMPROVEMENT OF SOIL STRUCTURE WHICH COMPRISES DISTRIBUTING IN THE SOIL AND IN INTIMATE ADMIXTURE THEREWITH A WATER-SOLUBLE POLYTHYLENEIMINE, SAID POLYETHYLENEIMINE HAVING A VISCOSITY FOR AN AQUEOUS 25 PERCENT SOLUTION OF AT LEAST 20 CENTISTOKES AT A TEMPERATURE OF 25* C.
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |