US3716554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(chlorophenoxyacetyl)ethylene urea herbicides
Assignee: Honeywell International Inc
•
Filing: 1971-05-17
•
Granted: 1973-02-13
•
Expires: 1991-05-17
Abstract
Abstract N-(Chlorophenoxyacetyl)ethylene ureas are prepared by reacting ethylene urea with a chlorophenoxyacetyl chloride. The products are useful herbicides.
Inventors
- 👤 E Little
- 👤 C Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:45
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; C07D233/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
Compounds of the formula
Claim 2
Dependent Claim
4 words
Compounds of 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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |