US2680116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidiones and process for the
Assignee: —
•
Filing: —
•
Granted: 1954-06-01
•
Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; C07D211/76; C07D211/06; C07D211/36; C07D211/40; C07D211/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOUND WHICH MAY BE REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
A COMPOUND WHICH MAY BE REPRESENTED BY THE GENERAL 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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |