Patent US3159540A successfully refreshed from Google Patents.
US3159540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic cirramycin and its production
Assignee: Bristol Banyu Research Institute Ltd
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Filing: 1962-07-03
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Granted: 1964-12-01
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Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Kawaguchi Hiroshi
- 👤 Koshiyama Hideo
- 👤 Okanishi Masanori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:21
CPC Classifications
C; C07; C07G; C07G11/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ANTIBIOTIC SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF GRAM-POSITIVE BACTERIA WHICH IS SELECTED FROM THE GROUP CONSISTING OF A BASIC SUBSTANCE, CIRRAMYCIN A. WHICH IS SOLUBLE IN METHANOL, ETHANOL, BUTANOL, ETHYL ACETATE, BUTYL ACETATE, CHLOROFORM, ACETONE DIETHYL ETHER AND BENZENE AND SLIGHTLY SOLUBLE IN WATER AND INSOLUBLE IN PETROLEUM ETHER AND CAPABLE OF FORMING SALTS WITH ACIDS, WHICH GIVES POSITIVE FEHLING, TOLLENS AND MOLISCH REACTIONS, A POSITIVE ORCINOL REACTION AND NEGATIVE BIURET, NINHYDRIN AND FERRIC CHLORIDE REACTANTS, AND WHICH IN PURIFIED FORM MELTS AT 123-124*C., EXHIBITS (A)D20 OF -20* (C.=1.0, CHCL3) EXHIBITS IN ETHANOL AN ULTRAVIOLET ABSORPTION SPECTRA HAVING A MAXIMUM AT 240 MU,
Claim 2
Dependent Claim
105 words
AN ANTIBIOTIC SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF GRAM-POSITIVE BACTERIA WHICH IS SELECTED FROM THE GROUP CONSISTING OF A BASIC SUBSTANCE, CIRRAMYCIN A. WHICH IS SOLUBLE IN METHANOL, ETHANOL, BUTANOL, ETHYL ACETATE, BUTYL ACETATE, CHLOROFORM, ACETONE DIETHYL ETHER AND BENZENE AND SLIGHTLY SOLUBLE IN WATER AND INSOLUBLE IN PETROLEUM ETHER AND CAPABLE OF FORMING SALTS WITH ACIDS, WHICH GIVES POSITIVE FEHLING, TOLLENS AND MOLISCH REACTIONS, A POSITIVE ORCINOL REACTION AND NEGATIVE BIURET, NINHYDRIN AND FERRIC CHLORIDE REACTANTS, AND WHICH IN PURIFIED FORM MELTS AT 123-124*C., EXHIBITS (A)D20 OF -20* (C.=1.0, CHCL3) EXHIBITS IN ETHANOL AN ULTRAVIOLET ABSORPTION SPECTRA HAVING A MAXIMUM AT 240 MU,
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |