US3373163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-methyl-piperazides of alicyclic and heterocyclic carboxylic acids
Assignee: Hoechst AG
•
Filing: 1966-01-18
•
Granted: 1968-03-12
•
Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Loewe Heinz
- 👤 Urbanietz Josef
- 👤 Lammler Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:39
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; A; A23; A23G; A23G9/00; A23G9/04; A23G9/22; A23G9/26; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A CARBOXYLIC ACID-N-METHYL-PIPERAZIDE AND ITS PHYSIOLOGICALLY TOLERABLE SALTS, SAID PIPERAZIDE HAVING THE FORMULA
Claim 2
Dependent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A CARBOXYLIC ACID-N-METHYL-PIPERAZIDE AND ITS PHYSIOLOGICALLY TOLERABLE SALTS, SAID PIPERAZIDE HAVING THE FORMULA
References Cited (Backward Citations)
US3147261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |