US3816516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl-alkanolamine,alkylamine and alpha-aminoalkyl ketone derivatives as heart stimulants
Assignee: Pfizer Inc
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Filing: 1971-07-07
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Granted: 1974-06-11
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Expires: 1991-07-07
Abstract
Abstract NOVEL SUBSTITUTED 1-PHENYL-2-ALKYLAMINO-ALKANOLS, 1PHENYL-2-ALKYLAMINO-ALKANES AND A-AMINOALKYL PHENYL KETONES USEFUL AS HEART STIMULANTS ARE DISCLOSED.
Inventors
- 👤 D Cox
- 👤 I Barnish
- 👤 A Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:18
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/32; C07C275/34; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 0
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |