US2833775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted piperidines
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1955-08-22
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Granted: 1958-05-06
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Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Sperber Nathan
- 👤 Villani Frank
- 👤 Grove Cedar
- 👤 Papa Domenick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:39
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07D211/34; C07D211/68; C07D211/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
PIPERIDYL CARBIONOLS OF THE GROUP CONSISTING OF COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
12 words
PIPERIDYL CARBIONOLS OF THE GROUP CONSISTING OF COMPOUNDS OF THE GENERAL FORMULA
References Cited (Backward Citations)
GB621231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |