Patent US3147261A successfully refreshed from Google Patents.
US3147261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-acyl-nu'-methylpiperazines
Assignee: Individual
•
Filing: 1963-11-04
•
Granted: 1964-09-01
•
Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert R Mod
- 👤 Evald L Skau
- 👤 Sara P Fore
- 👤 Frank C Magne
- 👤 Arthur F Novak
- 👤 Harold P Dupuy
- 👤 Jesse R Ortego
- 👤 Mary J Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:05
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
N-DECANOYL-N''-METHYLPIPERAZINE.
Claim 2
Dependent Claim
1 words
N-DECANOYL-N''-METHYLPIPERAZINE.
Claim 3
Dependent Claim
1 words
N-OLEOYL-N''-METHYLPIPERAZINE.
Claim 4
Dependent Claim
1 words
N-OLEOYL-N''-METHYLPIPERAZINE.
References Cited (Backward Citations)
US2541584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |