US3725543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic antibiotics
Assignee: Novartis Corp
•
Filing: 1971-12-08
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Granted: 1973-04-03
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Expires: 1991-12-08
Abstract
Abstract Rifamycines or their semisynthetic derivatives, in combination with other antibiotics selected from oligosaccharides, tetracyclines, amphenicols, macrolides or peptides exhibit synergistic effects against pathogens.
Inventors
- 👤 E Konopka
- 👤 J Gelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:13
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/195
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
A composition as claimed in claim 1, wherein the pharmaceutical excipinet, and the component 3) is a pharmaceutical capsule excipient.
Claim 2
Dependent Claim
25 words
A composition as claimed in claim 1, containing between about 0.1 to 75 percent of the components 1) and 2) in the pharmaceutical excipient 3).
Claim 3
Dependent Claim
46 words
An antibiotic feedstuff or feed additive consisting of a growth promoting an amount of 1) rifampicin, 2) oxytetracycline, or a therapeutically useful salt of either component, wherein the proportions of the rifampicin to the oxytetracycline is 1:7.5 to 1:20 and 3) an extender, diluent or nutrient.
Claim 4
Dependent Claim
23 words
A feedstuff as claimed in claim 4, containing between about 0.00001 and 0.01 percent of the compOnents 1) and 2) in a nutrient.
Claim 5
Dependent Claim
24 words
A feed additive as claimed in claim 4, containing between about 1 and 75 percent of the components 1) and 2) in an extender.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |