Patent US2857376A successfully refreshed from Google Patents.
US2857376A
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Water-insoluble crystalline streptomycin and dihydrostreptomycin salts and method ofpurifying streptomycin and dihydrostreptomycin by means thereof
Assignee: Schenley Industries Inc
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Filing: 1956-03-15
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Granted: 1958-10-21
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Expires: 1976-03-15
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:25
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/238
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A WATER-INSOLUBLE CRYSTALLIZED SALT OF DIPHENYL-4MONOSULFONIC ACID AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OD STREPTOMYCIN AND DIHYDROSTREPTOMYCIN.
Claim 2
Dependent Claim
19 words
A WATER-INSOLUBLE CRYSTALLIZED SALT OF DIPHENYL-4MONOSULFONIC ACID AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OD STREPTOMYCIN AND DIHYDROSTREPTOMYCIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |