US2840503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil fumigation
Assignee: Shell Development Co
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Filing: 1956-02-20
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Granted: 1958-06-24
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Richard R Whetstone
- 👤 Seaver A Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:32
CPC Classifications
A; A01; A01N; A01N37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE TREATMENT OF AGRICULTURAL SOIL INFESTED WITH PHYTOPATHOGENIC ORGANISMS, THE STEP WHICH COMPRISES DISSEMINATING INTO THE INFESTED SOIL A SUBSTITUTED LOW MOLECULAR WEIGHT OLEFIN CHARACTERIZED BY THE PRESENCE OF A PLURALITY OF ACYLOXY SUBSTITUENT GROUPS DIRECTLY ATTACHED TO THE OLEFINIC RESIDUE SAID OLEFINIC RESIDUE HAVING NOT MORE THAN 8 CARBON ATOMS, IN A CONCENTRATION TOXIC TO SAID PHYTOPATHOGENIC ORGANISMS.
Claim 2
Dependent Claim
60 words
IN THE TREATMENT OF AGRICULTURAL SOIL INFESTED WITH PHYTOPATHOGENIC ORGANISMS, THE STEP WHICH COMPRISES DISSEMINATING INTO THE INFESTED SOIL A SUBSTITUTED LOW MOLECULAR WEIGHT OLEFIN CHARACTERIZED BY THE PRESENCE OF A PLURALITY OF ACYLOXY SUBSTITUENT GROUPS DIRECTLY ATTACHED TO THE OLEFINIC RESIDUE SAID OLEFINIC RESIDUE HAVING NOT MORE THAN 8 CARBON ATOMS, IN A CONCENTRATION TOXIC TO SAID PHYTOPATHOGENIC ORGANISMS.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |