US3923823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic A23187 and Process for preparation thereof
Assignee: Eli Lilly and Co
•
Filing: 1974-01-17
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Granted: 1975-12-02
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Expires: 1994-01-17
Abstract
Abstract Antibiotic A23187 of the formula AND PROCESS FOR PRODUCTION THEREOF BY SUBMERGED AEROBIC CULTURE OF Streptomyces chartreusis NRRL 3882. The antibiotic demonstrates antimicrobial activity and exhibits ionophorous properties, with a specificity for divalent cations.
Inventors
- 👤 Richard M Gale
- 👤 Calvin E Higgens
- 👤 Marvin M Hoehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:54
CPC Classifications
C; C07; C07D; C07D413/00; C07D413/14; C07D493/00; C07D493/02; C07D493/10; C07G; C07G11/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE ANTIBIOTIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
6 words
THE ANTIBIOTIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3576004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |