US3221019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-alkinyl and n-alkinyloxy-amides of 4-phenyl - 1,2,5,6 - tetrahydropyridino alkanoic acids and intermediates thereof
Assignee: Aldrich Chemical Co Inc
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Filing: 1964-04-07
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Granted: 1965-11-30
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Expires: 1984-04-07
Abstract
No abstract record available.
Inventors
- 👤 John H Biel
- 👤 Harvey B Hopps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:30
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |