US2811529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphthylamino oxazolines
Assignee: Pfizer Inc
•
Filing: 1956-05-25
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Granted: 1957-10-29
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Expires: 1976-05-25
Abstract
No abstract record available.
Inventors
- 👤 Barry M Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:33
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED 2-(1''-NAPHTHYLAMINO)-OXAZOLINES AND THEIR PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS WHEREIN; (A) THE SUBSTITUENTS ON A SUBSTITUTED NAPHTHYL RING ARE SELECTED FROM THE GROUP CONSISTING OF ONE TO THREE ALKYL, ALKOXY AND THIOALKYL GROUPS CONTAINING UP TO FOUR CARBON ATOMS EACH AND ONE TO THREE CHLORINE, BROMINE AND IODINE ATOMS; AND (B) EACH SUBSTITUENT ON A SUBSTITUTED METHYLENE GROUP OF THE OXAZOLINE RING IS SELECTED FROM THE GROUP CONSISTING OF ONE TO FOUR CARBON ATOM ALKYL GROUPS, THERE BEING A TOTAL OF FROM ONE TO EIGHT CARBON ATOMS IN SUCH SUBSTITUENTS.
Claim 2
Dependent Claim
100 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED 2-(1''-NAPHTHYLAMINO)-OXAZOLINES AND THEIR PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS WHEREIN; (A) THE SUBSTITUENTS ON A SUBSTITUTED NAPHTHYL RING ARE SELECTED FROM THE GROUP CONSISTING OF ONE TO THREE ALKYL, ALKOXY AND THIOALKYL GROUPS CONTAINING UP TO FOUR CARBON ATOMS EACH AND ONE TO THREE CHLORINE, BROMINE AND IODINE ATOMS; AND (B) EACH SUBSTITUENT ON A SUBSTITUTED METHYLENE GROUP OF THE OXAZOLINE RING IS SELECTED FROM THE GROUP CONSISTING OF ONE TO FOUR CARBON ATOM ALKYL GROUPS, THERE BEING A TOTAL OF FROM ONE TO EIGHT CARBON ATOMS IN SUCH SUBSTITUENTS.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |