US3708482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-morpholinoethoxy-benzophenones
Assignee: Pfizer Italia SRL
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Filing: 1970-04-10
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Granted: 1973-01-02
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Expires: 1990-04-10
Abstract
Abstract BASIC ETHERS ARE DISCLOSEED FOR INSTANCE OF THE FORMULA: 3,3-DI(H3C-O-),4-((MORPHOLINO)-CH2-CH2-O-)BENZOPHENONE METHODS OF PREPARATION FOR THESE ETHERS ARE ALSO DISCLOSED; FOR EXAMPLE BY THE REACTION OF THE SODIUM SALT OF DIMETHYLFORMAMIDE WITH 3,5-DIMETHOXY-4-HYDROXYBENZOPHENONE IN THE REACTION SOLVENT DIMETHYLFORMAMIDE. THESE BASIC ETHERS HAVE BEEN FOUND TO EXHIBIT ANTI-TUSSIVE ACTIVITY
Inventors
- 👤 F Lauria
- 👤 V Vecchietti
- 👤 W Logemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:16
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 0
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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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |