Primycin-containing colloidal basic gel
Patent 5064815 Issued on November 12, 1991. Estimated Expiration Date: 
March 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for treatment of acne Clear cosmetic sticks Penetrating topical pharmaceutical compositions containing N-(2-hydroxyethyl) pyrrolidone Penetrating topical pharmaceutical compositions containing 1-dodecyl-azacycloheptan-2-one Patent #: 4557934 Inventors
ApplicationNo. 500236 filed on 03/26/1990US Classes:514/31, The hetero ring has 20 or more ring carbons (e.g., nystatin, etc.)536/6.5Oxygen containing hetero ring having at least twenty members (e.g., amphotericin, nystatin, pimaricin, etc.)ExaminersPrimary: Peselev, ElliAttorney, Agent or FirmForeign Patent References
International ClassesA61K 031/70C07H 017/08 Foreign Application Priority Data1985-11-27 HUAbstractThis invention relates to a primycin-containing colloidal basic gel comprising 5-30% of primycin and 95-70% of N-methyl-pyrrolidone-2. The invention also relates to antibacterial compositions particularly for the treatment of acne vulgaris comprising as active ingredient 0.1-100% of a primycin-containing colloidal basic gel, if desired together with further antimicrobial active ingredients, in admixture with 99.9-0% of usual inert pharmaceutical filling, diluting and other formulating additives. The invention also relates to combination composition comprising as active ingredient 1-60% of a primycin-containing colloidal basic gel and 0.1-40% of further pharmaceutical active ingredient(s), e.g. one or more antibiotic(s), chemotherapeutical agent(s), fungistatic or fungicidal agent(s), steroidal or non-steroidal antiinflammatory agent (s), epithelogenic agent(s), local anaesthetic(s), and/or vitamin(s).Other References
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