Patent JPS63251374A successfully refreshed from Google Patents.
US3682933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of benzoxazoline-2-one
Assignee: Robapharm AG
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Filing: 1969-05-27
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Granted: 1972-08-08
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Expires: 1989-05-27
Abstract
Abstract Novel compounds of the formula WHEREIN R1 and R2 represent hydrogen, halogen, nitro or alkyl, R3 represents an alkyl substituted heterocyclic amine and A represents a saturated alkylene radical, excepting compounds where A indicates ethylene and R3 pyridine, useful as analgesics, anti-pyretics and antiphlogistics.
Inventors
- 👤 Kurt Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:53
CPC Classifications
C; C07; C07D; C07D413/00; C07D413/02; C07D413/06; A; A47; A47K; A47K3/00; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
15 words
The compound according to claim 1, wherein the alkylene radical A is ethylene or propylene.
Claim 2
Dependent Claim
17 words
The compound according to claim 1, wherein R1 and R2 are chlorine, bromine, nitro, methyl or ethyl.
Claim 3
Dependent Claim
14 words
The compound according to claim 1, wherein R3 is pyridyl and A is methylene.
References Cited (Backward Citations)
US3226372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |