US3812249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic bl580
Assignee: Wyeth Holdings LLC
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Filing: 1972-11-24
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Granted: 1974-05-21
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Expires: 1992-11-24
Abstract
Abstract This disclosure describes two new antibiotics, designated BL580 Alpha and BL580 Beta , produced in a microbiological fermentation under controlled conditions using a new strain of Streptomyces hygroscopicus and mutants thereof. The new antibiotics are active antimalarial and anticoccidial agents.
Inventors
- 👤 J Martin
- 👤 S Kantor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:42
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/898
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
A compound as defined in claim 1, antibiotic BL580 Alpha , in its essentially pure form.
Claim 2
Dependent Claim
83 words
Antibiotic BL580 Beta , a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form; b. has an optical rotation ( Alpha )D25 1.06* + or - 0.2* (C 0.942 in chloroform); c. has the following elemental analysis (percent): C,60.74; H, 8.73; O,22.71; ash, 5.60; d. has a molecular weight of 641 as measured by isothermal distillation in chloroform; and e. has a characteristic infrared absorption spectrum as shown in FIG. 2 of the drawings.
Claim 3
Dependent Claim
16 words
A compound as defined in claim 3, antibiotic BL580 Beta , in its essentially pure form.
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |