Patent US3205258A successfully refreshed from Google Patents.
US3205258A
Expired / Lapsed
US
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Herbicidally active ureas
Assignee: Novartis Corp
•
Filing: 1958-07-14
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Granted: 1965-09-07
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 John V Simonian
- 👤 Kroll Harry
- 👤 Janet B Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:57
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/40; C07C275/30; C07C275/32; C07C275/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2095457A
Cited
US2562011A
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US2572568A
Cited
US2655447A
Cited
US2687348A
Cited
US2760971A
Cited
US3020144A
Cited
US3020145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |