US2985654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperazino derivatives and methods for their manufacture
Assignee: Merck Sharp & Dohme LLC
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Filing: 1956-09-21
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Granted: 1961-05-23
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Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Margaret H Sherlock
- 👤 Sperber Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:47
CPC Classifications
C; C07; C07D; C07D281/00; C07D281/02; C07D281/04; C07D281/08; C07D281/12; C07D281/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOTHIAZYL ALKYL PIPERAZINES OF THE STRUCTURAL FORMULA: AND THE NON TOXIC ACID ADDITION SALTS THEREOF WHEREIN R IS A LOWER ALKYL GROUP, R1 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL, Y IS A BIVALENT SATURATED ALIPHATIC HYDROCARBON GROUP HAVING FROM 2 TO 5 CARBON ATOMS WITH AT LEAST 2 CARBON ATOMS SEPARATING THE 10-PHENOTHIAZYL-NITROGEN ATOM FROM THE 4-PIPERAZINYL NITROGEN ATOM, AND A IS A MEMBER OF THE GROUP CONSISING OF LOWER ALKYL, LOWER ALKENYL, LOWER ALKYNYL, AND A SUBSTITUTED LOWER ALKYL OF THE GROUP CONSISTING OF HYDROXY-LOWER ALKYL, LOWER ALKANOLOXY-LOWR ALKYL, CARBAMOYLOXY-LOWER ALKYL, DI-LOWER ALKYL CARBAMOYLOXYLOWER ALKYL, LOWER ALKYL AND HYDROXY LOWER ALKOXY-LOWER ALKYL, WHEREIN THE SUBSTITUENT IS SEPARATED FROM THE 1-PIPERAZINYL NITROGEN ATOM BY AT LEAST 2 CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |