Patents Represented by Attorney Charles J. Knuthy

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  • Chlortetracycline compositions
    Patent number: 4081527
    Abstract: Aqueous solutions of chlortetracycline or salts thereof, a pharmaceutically acceptable calcium compound and 2-pyrrolidone as a co-solvent, said solution having a pH of 8 to 10 and being useful as an injectable composition combining low viscosity, high potency, good clarity and good stability.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: March 28, 1978
    Assignee: Pfizer Inc.
    Inventors: William W. Armstrong, Saurabhkumar J. Desai