US2770537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-1-naphthylphthalamic acid herbicidal compositions
Assignee: Uniroyal Inc
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Filing: 1954-10-27
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Granted: 1956-11-13
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Expires: 1974-10-27
Abstract
No abstract record available.
Inventors
- 👤 Allen E Smith
- 👤 Albert W Feldman
- 👤 Gracie M Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:15
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
THE METHOD OF CONTROLLING WEEDS IN SOIL WHICH COMPRISES TREATING THE SOIL BEFORE EMERGENCE OF WEEDS WITH A PHYTOTOXIC AMOUNT OF N-1-NAPHYTHYLPHTHALAMIC ACID, AND MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFURIC, HYDROCHLORIC, NITRIC AND PHOSPHORIC ACIDS, AND ALKALI BISULFATES IN PROPORTION SUFFICIENT TO REDUCE LEACHING IN THE SOIL OF SAID N-1-NAPHTHYLPHTHALAMIC ACID, AND IN THE ABSENCE OF ANY ADDED BASIC MATERIAL CAPABLE OF REACTING WITH SUCH ACIDIC IORGANIC CHEMICAL TO NEUTRALIZE IT.
References Cited (Backward Citations)
US2556665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |