Patent US2517826A successfully refreshed from Google Patents.
US2517826A
Expired / Lapsed
US
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Beta-(2-benzothienyl)-alpha-amino propionic acid and salts
Assignee: National Drug Co
•
Filing: 1948-03-25
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Granted: 1950-08-08
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Expires: 1968-03-25
Abstract
No abstract record available.
Inventors
- 👤 Avakian Souren
- 👤 Gustav J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:09
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/50; C07D333/52; C07D333/54; C07D333/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BETA-(2 BENZOTHIENYL) - ALPHA - AMINO PROPIONIC ACID AND ITS SALTS.
Claim 2
Dependent Claim
19 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BETA-(2 BENZOTHIENYL) - ALPHA - AMINO PROPIONIC ACID AND ITS SALTS.
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) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |