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US3657282A
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US
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Carboxyepoxyethyl-1-phosphonic acid and derivatives
Assignee: Merck and Co Inc
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Filing: 1969-01-23
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Granted: 1972-04-18
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Expires: 1989-01-23
Abstract
Abstract NOVEL SUBSTITUTED EPOXYETHYLPHOSPHONIC ACIDS AND DERIVATIVES THEREOF ARE PREPARED BY OXIDATIONOF THE CORRESPONDING VINYL COMPOUNDS OR BY TREATING A 1,2-DISUBSTITUTED ETHYLPHOSPHONIC ACID COMPOUND WITH A REAGENT CAPABLE OF EFFECTING EPOXIDE RING CLOSURE. THE NEW SUBSTITUTED EPOXYETHYLPHOSPHONIC ACID COMPOUNDS AND DERIVATIVES SUCH AS THEIR SALTS ARE ANTIBACTERIALS WHICH INHIBIT THE GROWTH OF GRAN-POSITIVE AND GRAM-NEGATIVE BACTERIA.
Inventors
- 👤 Burton G Christensen
- 👤 Thomas R Beattie
- 👤 Donald W Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:43
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/655; C07F9/65502; C07F9/65505; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/42; C07C323/00; C07C45/00; C07C45/27; C07C45/29; C07C45/298
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |