US3883653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing asthmatic symptoms
Assignee: Pfizer Inc
•
Filing: 1972-10-24
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Granted: 1975-05-13
•
Expires: 1992-10-24
Abstract
Abstract 5-Carboxypyrimidine derivatives and their pharmaceutically acceptable basic salts, and their use as antiallergy agents.
Inventors
- 👤 Wayne E Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:55
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/34; C07D239/36; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
A OETHOD FO PREVENTING ASTHMATIC SYMPTOMS IN A HUMAN WHO IS SUBFECT TO BRONCHOCONSISTRICTION, SAID METHOD COMPRISING ADMINISTERING TO SAID HUMAN ABOUT 20 TO 200 MG, PER DAY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
37 words
A OETHOD FO PREVENTING ASTHMATIC SYMPTOMS IN A HUMAN WHO IS SUBFECT TO BRONCHOCONSISTRICTION, SAID METHOD COMPRISING ADMINISTERING TO SAID HUMAN ABOUT 20 TO 200 MG, PER DAY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said symptoms are the result of allergic asthma.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein Ar is phenyl and m is 0.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein Ar is 4-methoxyphenyl and m is 0.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein Ar is 4-chlorophenyl and m is 0.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein Ar is 4-methoxyphenyl and m is
References Cited (Backward Citations)
US3745161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |