Patent US3657247A successfully refreshed from Google Patents.
US3657247A
Expired / Lapsed
US
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Pesticidal halogen-substituted pyrimidinyl phosphorus esters
Assignee: Imperial Chemical Industries Ltd
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Filing: 1969-07-07
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Granted: 1972-04-18
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Expires: 1989-07-07
Abstract
Abstract HALOGEN-SUBSTITUTED PYRIMIDINYL PHOSPHORUS ESTERS WHICH ARE USEFUL AS PESTICIDES.
Inventors
- 👤 Peter Frank Hilary Freeman
- 👤 Stuart Peter Sharpe
- 👤 Roger Franklin Joseph Markey
- 👤 Frederick Charles Peacock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:49
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/02; A01N57/08; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6509; C07F9/6512
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |