US3296246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of antibiotics having a basic reaction and process for preparation
Assignee: Societe Industrielle pour la Fabrication des Antibiotiques SA SIFA
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Filing: 1959-07-17
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Granted: 1967-01-03
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Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Ores Bernard
- 👤 Zuckerkandl Frederic
- 👤 Philippe Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:09
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07G; C07G11/00; C07H15/222; C07H15/226; C07H15/234
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A PROCESS FOR THE PREPARATION OF NEW DERIVATIVES OF BASIC ANTIBIOTICS, HAVING A MOIETY SELECTED FROM THE GROUP CONSISTING OF PRIMARY AMINE, SECONDARY AMIINE, AND BOTH PRIMARY AND SECONDARY AMINE AND FURTHER HAVING A MOIETY SELECTED FROM THE GROUP CONSISTING OF AN AMINATED SUGAR, AN AMINOCYCLTOL AND BOTH AMINATED SUGAR AND AMINOCYCLITOL, WHICH COMPRISES REACTING SAID BASIC ANTIBIOTIC HAVING AT LEAST ONE FREE BASIC GROUP WITH A SALT OF AN ACID SELECTED FROM THE CLASS CONSISTING OF HYDROXYALKANE SULPHINIC ACIDS AND HYDROXYALKKANE SULPHONIC ACIDS IN A LIQUID MEDIUM UNTIL THE REACTION IS SUBSTANTIALLY COMPLETE AND THEREAFTER SEPARATING THE RESULTING CONDENSATION PRODUCT FROM THE REACTION MEDIUM, SAID BASIC ANTIBIOTIC BEING ONE WHICH WILL REACT WITH SAID SALT TO FORM A CONDENSATION PRODUCT OF REDUCED TOXICITY.
Claim 2
Dependent Claim
124 words
A PROCESS FOR THE PREPARATION OF NEW DERIVATIVES OF BASIC ANTIBIOTICS, HAVING A MOIETY SELECTED FROM THE GROUP CONSISTING OF PRIMARY AMINE, SECONDARY AMIINE, AND BOTH PRIMARY AND SECONDARY AMINE AND FURTHER HAVING A MOIETY SELECTED FROM THE GROUP CONSISTING OF AN AMINATED SUGAR, AN AMINOCYCLTOL AND BOTH AMINATED SUGAR AND AMINOCYCLITOL, WHICH COMPRISES REACTING SAID BASIC ANTIBIOTIC HAVING AT LEAST ONE FREE BASIC GROUP WITH A SALT OF AN ACID SELECTED FROM THE CLASS CONSISTING OF HYDROXYALKANE SULPHINIC ACIDS AND HYDROXYALKKANE SULPHONIC ACIDS IN A LIQUID MEDIUM UNTIL THE REACTION IS SUBSTANTIALLY COMPLETE AND THEREAFTER SEPARATING THE RESULTING CONDENSATION PRODUCT FROM THE REACTION MEDIUM, SAID BASIC ANTIBIOTIC BEING ONE WHICH WILL REACT WITH SAID SALT TO FORM A CONDENSATION PRODUCT OF REDUCED TOXICITY.
Claim 3
Dependent Claim
4 words
N-METHANE SULFONATES OF KANAMYCIN.
Claim 4
Dependent Claim
4 words
N-METHANE SULFONATES OF KANAMYCIN.
References Cited (Backward Citations)
CA552562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |