Patent US4172895A successfully refreshed from Google Patents.
US4172895A
Expired / Lapsed
US
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6-(1'-Hydroxyethyl)-2-aminoethylthio-oxapen-2-em-3-carboxylic acid
Assignee: Merck and Co Inc
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Filing: 1977-12-28
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Granted: 1979-10-30
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Expires: 1997-12-28
Abstract
Abstract Disclosed is 6-(1'-Hydroxyethyl)-2-aminoethylthiooxapen-2-em-3-carboxylic acid: <IMAGE> Such compound and its pharmaceutically acceptable salt and ester derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
Inventors
- 👤 Burton G. Christensen
- 👤 Frank P. DiNinno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:28
CPC Classifications
C; C07; C07D; C07D205/00; C07D205/02; C07D205/06; C07D205/08; C07D503/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
13 words
A compound having the structural formula: ##STR10## and the pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
13 words
A compound having the structural formula: ##STR10## and the pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
15 words
A pharmaceutical composition comprising a compound according to claim 1 and a pharmaceutical carrier therefor.
References Cited (Backward Citations)
US3950357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |