Patent US2580474A successfully refreshed from Google Patents.
US2580474A
Expired / Lapsed
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Herbicidal composition
Assignee: Individual
•
Filing: 1950-01-04
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Granted: 1952-01-01
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Expires: 1970-01-04
Abstract
No abstract record available.
Inventors
- 👤 Frank J Sowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:54
CPC Classifications
A; A01; A01N; A01N55/00; A01N55/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
AN HERBICIDAL COMPOSITION CONSISTING OF A LIQUID MEDIUM CONTAINING ISOPROPYL ALCOHOL AND UP TO 90% BY WEIGHT OF A COORDINATION COMPLEX OF BORON TRIFLUORIDE AND AN ALKANOL AMINE HAVING THE COMPOSITION INDICATED BY THE FORMULA
Claim 2
Dependent Claim
35 words
AN HERBICIDAL COMPOSITION CONSISTING OF A LIQUID MEDIUM CONTAINING ISOPROPYL ALCOHOL AND UP TO 90% BY WEIGHT OF A COORDINATION COMPLEX OF BORON TRIFLUORIDE AND AN ALKANOL AMINE HAVING THE COMPOSITION INDICATED BY THE FORMULA
References Cited (Backward Citations)
US2238068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |