US3853896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain dilioweralkylamino-methylene(or ethylene)-2(ih)pyridones
Assignee: Merck and Co Inc
•
Filing: 1971-06-25
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Granted: 1974-12-10
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Expires: 1991-06-25
Abstract
Abstract Novel process for preparing pyridones via a nucleophilic substitution side chain reaction of halo-pyridones. The novel pyridones disclosed herein are potent anti-inflammatory, analgesic and anti-pyretic agents. Also included are pharmaceutical compositions containing said pyridones as active ingredients and the methods of treating painful, inflamed and fever states in patients by administering said compounds.
Inventors
- 👤 A Pessolano
- 👤 R Clark
- 👤 T Shen
- 👤 B Witzel
- 👤 P Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:21
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/64; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/227; C07D215/24; C07D215/26; C07D215/32; C07D215/36; C07D215/38; C07D215/40; C07D221/00; C07D221/02; C07D221/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
25 words
The compound of claim 1 wherein R1 is hydrogen; R2 is dimethylamino; x is 0; s is 0; p is 0; and p1 is 1.
Claim 4
Dependent Claim
25 words
The compound of claim 1 wherein R1 is hydrogen; R2 is dimethylamino; x is 0; p is 1; p1 is 0 and S is 1.
Claim 5
Dependent Claim
25 words
The compound of claim 1 wherein R1 is methyl; R2 is dimethylamino; p is 1; p1 is 0; s is 0; and x is 0.
Claim 6
Dependent Claim
25 words
The compound of claim 1 wherein R1 is methyl; R2 is dimethylamino; p is 0; P1 is 1; s is 0; and x is 0.
Claim 7
Dependent Claim
28 words
The compound of claim 1 wherein R1 is hydrogen; R2 is dimethylamino; R3 is methyl; p is 0; p1 is 1; s is 1; and x is 2.
Claim 8
Dependent Claim
28 words
The compound of claim 1 wherein R1 is hydrogen; R2 is dimethylamino; R3 is methyl; p is 1; p1 is 0; s is 1 and x is 1.
Claim 9
Dependent Claim
25 words
The compound of claim 1 wherein R1 is methyl; R2 is dimethylamino; s is 0; p is 0; p1 is 1; and x is 2.
Claim 10
Dependent Claim
25 words
The compound of claim 1 wherein R1 is methyl; R2 is dimethylamino; s is 0; p is 1; p1 is 0; and x is 2.
References Cited (Backward Citations)
US3721676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |