Patent US4012374A successfully refreshed from Google Patents.
US4012374A
Expired / Lapsed
US
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1-[[4-Phenyl-piperidinyl (or tetrahydropyridinyl)]alkyl]-2,6-piperidinedione and analogs
Assignee: ER Squibb and Sons LLC
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Filing: 1975-09-29
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Granted: 1977-03-15
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Expires: 1995-09-29
Abstract
Abstract Compounds having the formula ##STR1## wherein A is a straight or branched chain alkylene group; R 1 is hydrogen, halogen, alkyl, alkoxy, alkylthio, trifluoromethyl, nitro, amino, or cyano; and n is 0, 1, or 2; are useful central nervous system depressants.
Inventors
- 👤 Peter C. Wade
- 👤 B. Richard Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:21
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/86; C07D211/88
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A compound having the formula ##STR9##or a pharmaceutically acceptable salt thereof, wherein n is 0, 1, or 2; A is an alkylene group having 1 to 8 carbon atoms; and R 1 is hydrogen, halogen, alkyl, alkoxy, alkylthio, trifluoromethyl, nitro, amino or cyano; wherein the alkyl, alkoxy, and alkylthio groups have 1 to 4 carbon atoms.
Claim 2
Dependent Claim
56 words
A compound having the formula ##STR9##or a pharmaceutically acceptable salt thereof, wherein n is 0, 1, or 2; A is an alkylene group having 1 to 8 carbon atoms; and R 1 is hydrogen, halogen, alkyl, alkoxy, alkylthio, trifluoromethyl, nitro, amino or cyano; wherein the alkyl, alkoxy, and alkylthio groups have 1 to 4 carbon atoms.
Claim 3
Dependent Claim
19 words
A compound in accordance with claim 1 wherein A is an alkylene group having 2 to 8 carbon atoms.
Claim 4
Dependent Claim
20 words
A compound in accordance with claim 2 wherein A is an alkylene group having 2, 3, or 4 carbon atoms.
Claim 5
Dependent Claim
11 words
A compound in accordance with claim 1 wherein A is methylene.
Claim 6
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 1 is hydrogen.
Claim 7
Dependent Claim
11 words
A compound in accordance with claim 1 having the formula ##STR10##
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |