Patent US3660487A successfully refreshed from Google Patents.
US3660487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(alkyl) alkanesulfonamido phenethanolamines
Assignee: Mead Johnson and Co LLC
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Filing: 1969-10-02
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Granted: 1972-05-02
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Expires: 1989-10-02
Abstract
Abstract A NEW CLASS OF SYMPATHOLYTIC PHENETHANOLAMINES WITH N-(ALKYL) ALKANESULFONAMIDO AND HYDROXY AROMATIC SUBSTITUENTS HAS BEEN SYNTHESIZED. THE SUBSTANCES ARE PHARMACOLOGICALLY ACTIVE ADRENERGIC BLOCKING AGENTS. A PREFERRED COMPOUND IS 2''-HYDROXY-5''-(1-HYDROXY-2-(1-PHENOXY-2-PROPYLAMINO)PROPYL)-N -METHYLMETHANISULFONANILIDE WHICH EFFECTIVELY SUPPRESSES BOTH ALPHA AND BETAADRENERGIC STIMULATION.
Inventors
- 👤 Aubrey A Larsen
- 👤 Robert H Uloth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:21
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/092; A; A61; A61P; A61P25/00; A61P25/02; C07C; C07C205/00; C07C205/45
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |