US3591623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrophenylacetic acid derivatives
Assignee: Gulf Research and Development Co
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Filing: 1969-07-31
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Granted: 1971-07-06
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Expires: 1989-07-31
Abstract
Abstract WEEDS ARE COMBATED BY HERBICIDALLY EFFECTIVE AMOUNTS OF ISOMERIC NITROPHENYLACETIC ACIDS ANDWITH PRE-EMERGENT CONTROL, IN PARTICULAR, OBTAINED BY USE OF 2-NITROPHENYLACETIC ACID AMIDES AND ESTERS THEREOF.
Inventors
- 👤 Gayle E Back
- 👤 Norman A Dahle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/56
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |