Patent US2687366A successfully refreshed from Google Patents.
US2687366A
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Analgesic composition
Assignee: Wyeth LLC
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Filing: 1951-03-20
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Granted: 1954-08-24
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Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Seifter Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:55
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/60; A61K31/618; A61K31/621
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ANALGESIC COMPRISING, IN COMBINATION, ACETYLSALICYLIC ACID AND A NON-TOXIC SALT OF NMETHYL - OMEGA - PHENYL - TERTIARY - BUTYL AMINE WHEREIN SAID NON-TOXIC SALT INCREASE THE ANALGESIC EFFECT OF THE ANALGESIC WHILE PRODUCING NO SUBSTANTIAL SYMPTOMS OF CENTRAL CEREBRAL STIMULATION.
Claim 2
Dependent Claim
42 words
AN ANALGESIC COMPRISING, IN COMBINATION, ACETYLSALICYLIC ACID AND A NON-TOXIC SALT OF NMETHYL - OMEGA - PHENYL - TERTIARY - BUTYL AMINE WHEREIN SAID NON-TOXIC SALT INCREASE THE ANALGESIC EFFECT OF THE ANALGESIC WHILE PRODUCING NO SUBSTANTIAL SYMPTOMS OF CENTRAL CEREBRAL STIMULATION.
References Cited (Backward Citations)
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Cited
US2298630A
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US2408345A
Cited
US2427887A
Cited
US2590079A
Cited
US2507468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |