Patent US2545186A successfully refreshed from Google Patents.
US2545186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous insecticidal emulsions containing organic esters of phosphorous acids
Assignee: Shell Development Co
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Filing: 1947-06-02
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Granted: 1951-03-13
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wallace J Yates
- 👤 Frank B Folekemer
- 👤 William A Simanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:32
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A NON-AQUEOUS INSECTICIDAL COMPOSITION COMPRISING A LIGHT MINERAL SPRAY OIL, BETWEEN ABOUT 0.1% AND ABOUT 10% OF A SURFACE-ACTIVE ORGANIC ETER OF A PHOSPHOROUS ACID DISSOLVED IN SAID OIL, SAID ESTER HAVING A RATIO OF CARBON ATOMS TO PHOSPHOROUS ATOMS OF AT LEAST 12, AND A TOXIC CONCENTRATION OF A INSECTICIDALLY ACTIVE POLYALKYL ESTER OF A POLYPHOSPHOROUS ACID HAVING A RATIO OF CABRON ATOMS TO PHORPHORUS ATOMS LESS THAN 12, SAID LATTER ESTER BEING SUBSTANTIALLY INSOLUBLE AND PREDOMINANTLY UNDISSOLVED IN SAID OIL BUT EMULSIFIED THEREIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |