Patent US3621043A successfully refreshed from Google Patents.
US3794652A
Expired / Lapsed
US
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Aminoethanesulfonyl derivatives
Assignee: Individual
•
Filing: 1971-08-25
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Granted: 1974-02-26
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Expires: 1991-08-25
Abstract
Abstract STABLE, WATER-SOLUBLE AINOETHANESULFONYL DERIVATIVES HAVING ANALGESTIC ACATIVITY OR ANTILIPEMIC ACTION ARE DESCRIBED. THEY ARE PREPARED BY AMMONOLYSIS OF THE CORRESPONDING HALIDES PREFERABLY UNDER HIGH PRESSURE IN THE PRESENCE OF A CATALYST OR BY DEACYLATION OF THE CORRESPONDING ACYLAMINO OR ACYLIMINO COMPOUND,OR BY NICOTINOYLATION OF AN AMINO COMPOUND.
Inventors
- 👤 S Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:05
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/76; C07D213/78; C07D213/81; C07D213/82; C07D295/00; C07D295/22; C07D295/26
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |