Patent US2759941A successfully refreshed from Google Patents.
US2759941A
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Inverse amides and method of making
Assignee: SmithKline Beecham Corp
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Filing: 1955-02-24
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Granted: 1956-08-21
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Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Phillips
- 👤 Wnuck Adolph Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:02
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07D295/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE FREE BASE AND ITS ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
22 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE FREE BASE AND ITS ACID ADDITION SALTS, SAID FREE BASE HAVING THE 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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |