US3903072A
Expired / Lapsed
US
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Antibiotic from {i micromonospora purpurea
Assignee: Merck Sharp & Dohme LLC
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Filing: 1973-11-09
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Granted: 1975-09-02
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Expires: 1993-11-09
Abstract
Abstract A mutant strain of Micromonospora purpurea herein designated M. purpurea JI-20 elaborates an antibiotic complex comprising gentamicin and at least two novel antibiotic substances namely Antibiotic JI-20A and Antibiotic JI-20B. The so-produced antibiotics have an adverse effect upon the growth of grampositive and gram-negative bacteria.
Inventors
- 👤 Jan Ilavsky
- 👤 Aris P Bayan
- 👤 William Charney
- 👤 Hans Reimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:07
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/226; C07H15/234; C07H15/236
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTIBIOTIC JI-20A AND ANTIBIOTIC JL-20B, HAVING THE FORMULA:
Claim 2
Dependent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTIBIOTIC JI-20A AND ANTIBIOTIC JL-20B, HAVING THE FORMULA:
Claim 3
Dependent Claim
15 words
A compound according to claim 1 wherein R is hydrogen, said compound being Antibiotic JI-20A.
Claim 4
Dependent Claim
15 words
A compound according to claim 1 wherein R is methyl, said compound being Antibiotic JI-20B.
Claim 5
Dependent Claim
16 words
A compound according to claim 1, said compound being an acid addition salt of Antibiotic JI-20B.
Claim 6
Dependent Claim
16 words
A compound according to claim 1, said compound being an acid addition salt of Antibiotic JI-20A.
Claim 7
Dependent Claim
12 words
A compound according to claim 3, said compound being Antibiotic JI-20B sulfate.
Claim 8
Dependent Claim
12 words
A compound according to claim 4, said compound being Antibiotic JI-20A sulfate.
Claim 9
Dependent Claim
12 words
A coMpound selected from the group consisting of compounds having the formula:
Claim 10
Dependent Claim
12 words
A coMpound selected from the group consisting of compounds having the formula:
References Cited (Backward Citations)
US3661892A
Cited
US3651042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |