Patent US3666435A successfully refreshed from Google Patents.
US3666435A
Expired / Lapsed
US
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Phosphorylated heterocyclic compounds as herbicides
Assignee: Stauffer Chemical Co
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Filing: 1969-11-28
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Granted: 1972-05-30
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Expires: 1989-11-28
Abstract
Abstract METHOD OF CONTROLLING PLANT LIFE WITH PHOSPHORYLATED HEREOCYCLIC COMPOUNDS OF THE FORMULA R-O-(R1-O-)P(=X)-S-ALKYLENE-(R3-)C<(-N(-R2)-Q-X-) WHEREIN R AND R'' ARE LOWER ALKYL; X IS OXYGEN OR SULFUR; R2 IS H, LOWER ALKYL;R3 IS H, ALKYL OF 1 TO 3 CARBON ATOMS; AND Q IS ETHYLENE, PROCYLENE OR PHENYLENE.
Inventors
- 👤 Glenn R Price
- 👤 Edward N Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:57
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6536; C07F9/6539; C07F9/6541; C07F9/6527; C07F9/653; C07F9/6544
Claims Analysis
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |