Patent US2636032A successfully refreshed from Google Patents.
US2636032A
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N, n'-disubstituted piperazines and process of preparing same
Assignee: Abbott Laboratories
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Filing: 1949-04-12
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Granted: 1953-04-21
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Expires: 1969-04-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Weston
- 👤 Jr Kenneth E Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/205; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/40; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D295/02; C07D295/027; C07D295/03; C07D295/033; C07D295/037; C07D295/04; C07D295/06; C07D295/073; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASES OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASES OF THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
10 words
THE PROCESS OF PREPARING A COMPOUND HAVING THE GENERAL FORMULA:
Claim 4
Dependent Claim
10 words
THE PROCESS OF PREPARING A COMPOUND HAVING THE GENERAL 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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |