US3584014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of (cis-1,2-epoxypropyl)-phosphonic acid and derivatives
Assignee: Merck and Co Inc
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Filing: 1969-06-02
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Granted: 1971-06-08
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Expires: 1989-06-02
Abstract
Abstract A METHOD FOR THE PREPARATION OF (CIS-1,2-EPOXYPROPYL)PHOSPHONIC ACID AND ITS SALT AND ESTER DERIVATIVES, WHICH COMPRISES TREATING A ((1 - VINYLOXY) METHYL) PHOSPHONIC ACID OR A SALT OR ESTER THEREOF WITH A REAGENT CAPABLE OF EFFECTING RING CLOSURE. THE (CIS-1,2-EPOXYPROPYL) PHOSPHONIC ACID PRODUCT THUS OBTAINED AND ITS SALTS ARE ANTIBIOTICS WHICH HAVE UTILITY ASS ANTIMICROBIAL AGENTSS IN INHIBITING THE GROWTH OF GRAM-POSITIVE AND GRAM-NEGATIVE PATHOGENIC BATERIA.
Inventors
- 👤 Raymond A Firestone
- 👤 Meyer Sletzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/655; C07F9/65502; C07F9/65505; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |