US2880209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperazine quaternary salts having parasitical activity and method of making
Assignee: Individual
•
Filing: 1954-09-02
•
Granted: 1959-03-31
•
Expires: 1974-09-02
Abstract
No abstract record available.
Inventors
- 👤 Harfenist Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/192; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/36; C07D295/02; C07D295/037; C07D295/04; C07D295/20; C07D295/205; C07D295/215; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C08K5/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND REPRESENTED BY 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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |