US3331845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted-4-substituted amino alkylene piperazines
Assignee: Wyeth Holdings LLC
•
Filing: 1966-06-17
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Granted: 1967-07-18
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Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Tomcufcik Andrew Stephen
- 👤 Fabio Paul Frank
- 👤 Arlene M Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:13
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/192; A; A61; A61K; A61K31/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PIPERAZINE OF THE GROUP CONSISTING OF THOSE HAVING THE FORMULA:
Claim 2
Dependent Claim
11 words
A PIPERAZINE OF THE GROUP CONSISTING OF THOSE HAVING THE FORMULA:
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |