US3936459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1',4'-Dihydro-1-methyl-spiro [piperidine and pyrrolidine-2,3'(2'H)quinoline]-2'-one compounds
Assignee: Abbott Japan Co Ltd
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Filing: 1974-12-11
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Granted: 1976-02-03
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Expires: 1994-12-11
Abstract
Abstract Spiro compounds having the structural formula ##SPC1## Where n is an integer of 1 or 2, Are disclosed. These compounds are useful as analgetic, antihistamine and spasmolytic agents. They are indicated in the management of conditions such as headache, seasonal allergies and the like.
Inventors
- 👤 Hideo Kato
- 👤 Eiichi Koshinaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:11
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A spiro compound of the formula: ##SPC4## wherein n is an integer of 1 or 2, and the corresponding pharmaceutically acceptable acid addition salts thereof.
Claim 2
Dependent Claim
25 words
A spiro compound of the formula: ##SPC4## wherein n is an integer of 1 or 2, and the corresponding pharmaceutically acceptable acid addition salts thereof.
Claim 3
Dependent Claim
11 words
A spiro compound according to claim 1 which is 1',4'-dihydro-1-methyl-spiro[piperidine-2,3'(2'H) quinolin]-2'-one.
Claim 4
Dependent Claim
10 words
A spiro compound according to claim 1 which is 1',4'-dihydro-1-methyl-spiro[pyrrolidine-2,3'(2'H)quinolin]-2'-one.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |