US2797187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of puromycin
Assignee: Wyeth Holdings LLC
•
Filing: 1955-09-29
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Granted: 1957-06-25
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Szumski Stephen Aloysius
- 👤 Goodman Joseph Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:36
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/38; C12P19/40; C12P21/00; C12P21/02; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD FOR THE PRODUCTION OF PUROMYCIN WHICH COMPRISES THE STEPS OF PROGAGATING THE MIRCOORGANISM STREPTOMYCES ALBO-NIGER UNDER AEROBIC CONDITIONS IN AN AQUEOUS NUTRIENT SOLUTION CONTAINING FROM ABOUT 0.1% TO ABOUT 5% OF A COMPOUND CONTAINING THE PURINYL RADICAL UNTIL SUBSTANTIAL ANTIMICROBIAL ACTIVITY IS IMPARTED TO THE SOLUTION.
Claim 2
Independent Claim
48 words
THE METHOD FOR THE PRODUCTION OF PUROMYCIN WHICH COMPRISES THE STEPS OF PROGAGATING THE MIRCOORGANISM STREPTOMYCES ALBO-NIGER UNDER AEROBIC CONDITIONS IN AN AQUEOUS NUTRIENT SOLUTION CONTAINING FROM ABOUT 0.1% TO ABOUT 5% OF A COMPOUND CONTAINING THE PURINYL RADICAL UNTIL SUBSTANTIAL ANTIMICROBIAL ACTIVITY IS IMPARTED TO THE SOLUTION.
References Cited (Backward Citations)
US2741575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |