US2498433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,3 dimethyl-4-propionoxy-4-phenyl-piperidine and acid addition salts thereof
Assignee: F Hoffmann La Roche AG
•
Filing: 1946-07-08
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Granted: 1950-02-21
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Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 Lee John
- 👤 Ziering Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:13
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/52; C07D211/68; C07D211/72; C07D211/74; C07D211/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
1,3-DIMETHYL-4-PROPIONOXY - 4 - PHENYL-PIPERIDINE AND THE SAID ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
11 words
1,3-DIMETHYL-4-PROPIONOXY - 4 - PHENYL-PIPERIDINE AND THE SAID ADDITION SALTS THEREOF.
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) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |