US3657230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-(tert. aminophenyl)-aliphatic acids
Assignee: BASF Corp
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Filing: 1968-09-03
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Granted: 1972-04-18
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Expires: 1988-09-03
Abstract
Abstract NEW A-(TERT, AMINOPHENYL)-ALIPHATIC ACIDS, E.G. THOSE OF THE FORMULA ((R4-N(-R3)-)PHENYL)-C(-R1)(-R2)-COOH R1=H OR ALKYL R2=H, ALK(EN)YL, CYCLOALK(EN)YL OR CYCLOALK(EN)YL-ALKYL R3=ALK(EN)YL, HYDROXYALKYL OR ALKOXYALKYL R4=CYCLOALK(EN)YL, CYCLOALK(EN)YL-ALKYL OR ARALKYL R3+R4=ALK(EN)YLENE, AZA-, OXA- OR THIA-ALKYLENE AND FUNCTIONAL DERIVATIVES THEREOF, ARE ANTI-INFLAMMATORY AGENTS.
Inventors
- 👤 Richard William James Carney
- 👤 George De Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:34
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/18; C07D207/20; C07D209/00; C07D209/02; C07D209/44; C07D209/46; C07D209/48; C07D211/00; C07D211/04; C07D211/68; C07D211/70; C07D211/72; C07D211/78; C07D295/00; C07D295/16; C07D295/18
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |