US2524643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-phenyl-2-piperidones
Assignee: MALTBIE LAB Inc
•
Filing: 1947-12-04
•
Granted: 1950-10-03
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Walter
- 👤 Richard H Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:54
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; C07D211/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A 2-PIPERIDONE HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A 2-PIPERIDONE HAVING 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) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |