Patent US2720482A successfully refreshed from Google Patents.
US2720482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized streptomycin solutions
Assignee: Merck and Co Inc
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Filing: 1953-08-03
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Granted: 1955-10-11
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Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Jack T Bryan
- 👤 Paul J Daughenbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:58
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; Y; Y10; Y10S; Y10S424/00; Y10S424/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN AQUEOUS SOLUTION OF AN ANTIBIOTIC CHARACTERIZED AS REMAINING STABLE DURING LONG STORAGE PERIODS CONTAINING AT LEAST ONE SALT OF STREPTOMYCIN, THE AMOUNT OF SAID SALT BEING EQUIVALENT TO AT LEAST ABOUT 250 MILLIGRAMS OF STREPTOMYCIN BASE PER MILLILITER OF SOLUTION, AND A COMPOSITE STABILIZER COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF B,B''-THIODIPROPIONIC ACID AND ITS WATER-SOLUBLE ESTERS AND AT LEAST ONE ACID SALT SELECTED FROM THE GROUP CONSISTING OF SALTS OF SULFUROUS AND HYDROUSULFUROUS ACID AND ALDEHYDE ADDITION PRODUCTS THEREOF.
Claim 2
Dependent Claim
83 words
AN AQUEOUS SOLUTION OF AN ANTIBIOTIC CHARACTERIZED AS REMAINING STABLE DURING LONG STORAGE PERIODS CONTAINING AT LEAST ONE SALT OF STREPTOMYCIN, THE AMOUNT OF SAID SALT BEING EQUIVALENT TO AT LEAST ABOUT 250 MILLIGRAMS OF STREPTOMYCIN BASE PER MILLILITER OF SOLUTION, AND A COMPOSITE STABILIZER COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF B,B''-THIODIPROPIONIC ACID AND ITS WATER-SOLUBLE ESTERS AND AT LEAST ONE ACID SALT SELECTED FROM THE GROUP CONSISTING OF SALTS OF SULFUROUS AND HYDROUSULFUROUS ACID AND ALDEHYDE ADDITION PRODUCTS THEREOF.
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |