US2851494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New alpha-amino-beta-hydroxycarboxylic acid amides and a process of preparing them
Assignee: Hoechst AG
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Filing: 1956-02-28
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Granted: 1958-09-09
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Expires: 1976-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ehrhart Gustav
- 👤 Ott Heinrich
- 👤 Lindner Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
C; C07; C07C; C07C237/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-AMINO-B-HYDROXY CARBOXYLIC ACID AMIDES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-AMINO-B-HYDROXY CARBOXYLIC ACID AMIDES OF THE GENERAL FORMULA
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |