Patent US2907766A successfully refreshed from Google Patents.
US2907766A
Expired / Lapsed
US
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Piperazine derivatives
Assignee: Abbott Laboratories
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Filing: 1956-09-10
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Granted: 1959-10-06
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Weston
- 👤 Harold E Zaugg
- 👤 Jr Raymond J Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:13
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
THE COMPOUND N-(B,B-DIPHENYL-B-HYDROXYETHYL) PIPERAZINE.
Claim 2
Dependent Claim
4 words
THE COMPOUND N-(B,B-DIPHENYL-B-HYDROXYETHYL) PIPERAZINE.
References Cited (Backward Citations)
GB683950A
Cited
US2716121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |