US2612522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkanoyl-alpha-ethylbenzylureas
Assignee: F Hoffmann La Roche AG
•
Filing: 1950-07-15
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Granted: 1952-09-30
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Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Duschinsky Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
C; C07; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C275/00; C07C275/46; C07C275/48; C07C275/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
1-(A-ETHYLBENZYL) -3-LOWER ALKANOYL UREA.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |