US2866296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of conditioning soil for growing plants by utilizing polysaccharide esters of polybasic acids
Assignee: EIDP Inc
•
Filing: 1954-11-17
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Granted: 1958-12-30
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Expires: 1974-11-17
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey W Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:55
CPC Classifications
A; A01; A01G; A01G7/00; A01N; A01N43/00; A01N43/02; A01N43/04; A01N43/14; A01N43/16; C; C05; C05F; C05F11/00; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/32; Y; Y10; Y10S; Y10S71/00; Y10S71/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD FOR CONDITIONING SOIL IN WHICH PLANTS ARE TO BE GROWN, SAID METHOD COMPRISING APPLYING TO THE SOIL A WATER SOLUBLE POLYSACCHARIDE ESTER OF A POLYBASIC ACID CONTAINING AT LEAST TWO OXYGEN ATOMS IN EACH ACID FUNCTION IN WHICH AT LEAST ONE ACID GROUP IS BONDED TO THE POLYSACCHARIDE THROUGH AN ESTER LINKAGE AND AT LEAST ONE ACID GROUP IS UNESTERIFIED.
Claim 2
Independent Claim
62 words
A METHOD FOR CONDITIONING SOIL IN WHICH PLANTS ARE TO BE GROWN, SAID METHOD COMPRISING APPLYING TO THE SOIL A WATER SOLUBLE POLYSACCHARIDE ESTER OF A POLYBASIC ACID CONTAINING AT LEAST TWO OXYGEN ATOMS IN EACH ACID FUNCTION IN WHICH AT LEAST ONE ACID GROUP IS BONDED TO THE POLYSACCHARIDE THROUGH AN ESTER LINKAGE AND AT LEAST ONE ACID GROUP IS UNESTERIFIED.
References Cited (Backward Citations)
US2093464A
Cited
US2297063A
Cited
FR903998A
Cited
US2535644A
Cited
US2676108A
Cited
US2625529A
Cited
US2753337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |