Patent US2763642A successfully refreshed from Google Patents.
US2763642A
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US
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Puromycin and preparation of same
Assignee: Wyeth Holdings LLC
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Filing: 1951-11-01
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Granted: 1956-09-18
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Porter John Norman
- 👤 Krupka George Charles
- 👤 Bohonos Nestor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:35
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/887
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A METHOD FOR THE PRODUCTION OF PUROMYCIN WHICH COMPRISES THE STEP OF PROPAGATING THE MICROORGANISM STREPTOMYCES ALBO-NIGER UNDER AEROBIC CONDITIONS IN A NUTRIENT AQUEOUS SOLUTION AT A TEMPERATURE WITHIN THE RANGE 20* C.-37* C. AT A PH OF BETWEEN 4.5 AND 9.0 UNTIL A SUBSTANTIAL AMOUNT OF PUROMYCIN IS FORMED IN SAID SOLUTION.
Claim 2
Independent Claim
53 words
A METHOD FOR THE PRODUCTION OF PUROMYCIN WHICH COMPRISES THE STEP OF PROPAGATING THE MICROORGANISM STREPTOMYCES ALBO-NIGER UNDER AEROBIC CONDITIONS IN A NUTRIENT AQUEOUS SOLUTION AT A TEMPERATURE WITHIN THE RANGE 20* C.-37* C. AT A PH OF BETWEEN 4.5 AND 9.0 UNTIL A SUBSTANTIAL AMOUNT OF PUROMYCIN IS FORMED IN SAID SOLUTION.
Claim 3
Dependent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE STRUCTURAL FORMULA:
Claim 4
Dependent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2516080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |