US2883389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidyl-4-hydrazines
Assignee: Sandoz AG
•
Filing: 1957-01-02
•
Granted: 1959-04-21
•
Expires: 1977-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jucker Ernst
- 👤 Rissi Erwin
- 👤 Suess Rudolf
- 👤 Vogel Arnold
- 👤 Wolff Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:57
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/56; C07D211/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF PIPERIDYL-4-HYDRAZINES WHICH CORRESPOND TO THE FORMULA
Claim 2
Dependent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF PIPERIDYL-4-HYDRAZINES WHICH CORRESPOND TO THE FORMULA
Claim 3
Dependent Claim
14 words
W- (N - METHYL - PIPERIDYL - 4) - W'' - ACETYL - HYDRAZINE.
Claim 4
Dependent Claim
14 words
W- (N - METHYL - PIPERIDYL - 4) - W'' - ACETYL - HYDRAZINE.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |