US2728654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted urea herbicides
Assignee: EIDP Inc
•
Filing: 1953-10-13
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Granted: 1955-12-27
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Expires: 1973-10-13
Abstract
No abstract record available.
Inventors
- 👤 Henry J Gerjovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:05
CPC Classifications
C; C07; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C273/1818; C07C273/1827
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD FOR THE CONTROL OF WEEDS WHICH COMPRISES APPLYING TO A LOCUS TO BE PROTECTED FROM THE WEEDS, IN AMOUNT SUFFICIENT TO EXERT A HERBICIDAL ACTION, A TRI-SUBSTITUTED UREA REPRESENTED BY THE FORMULA
Claim 2
Independent Claim
34 words
A METHOD FOR THE CONTROL OF WEEDS WHICH COMPRISES APPLYING TO A LOCUS TO BE PROTECTED FROM THE WEEDS, IN AMOUNT SUFFICIENT TO EXERT A HERBICIDAL ACTION, A TRI-SUBSTITUTED UREA REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |