US2565653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substantially pure dihydrostreptomycin-b base and salts thereof and method of obtaining same
Assignee: ER Squibb and Sons LLC
•
Filing: 1947-03-26
•
Granted: 1951-08-28
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Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 Fried Josef
- 👤 Elwood O Titus
- 👤 James A Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/238
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND OF THE GROUP CONSISTING OF DIHYDROMANNOSIDOSTREPTOMYCIN BASE AND SALTS THEREOF.
Claim 2
Dependent Claim
12 words
A COMPOUND OF THE GROUP CONSISTING OF DIHYDROMANNOSIDOSTREPTOMYCIN BASE AND SALTS THEREOF.
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |