US2941002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta-hydroxy carboxylic acid amides substituted at the nitrogen atom
Assignee: Hoechst AG
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Filing: 1957-10-29
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Granted: 1960-06-14
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Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Ehrhart Gustav
- 👤 Hennig Ingeborg
- 👤 Lindner Ernst
- 👤 Otto Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
SUBSTITUTED B-HYDROXY CARBOXYLIC ACID AMIDES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
9 words
SUBSTITUTED B-HYDROXY CARBOXYLIC ACID AMIDES OF THE GENERAL FORMULA
References Cited (Backward Citations)
DE16886C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |