Stable topical formulations with good active ingredient release characteristics, containing at least one lipophilized macrolide antibiotic
CA 2107620 C · Owner: Matschiner, Sybille · Inventors: Matschiner, Sybille; Wellner, Katrin; Wohlrab, Wolfgang A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stable topical formulation with good active ingredient release characteristics, comprising at least one macrolide antibiotic which is lipophilized with at least one former of oppositely charged ions which is selected from the group consisting of alkyl sulfates, alkylsulfonates and alkyl, salicylates, RX, where R represents a linear and/or branched alkyl group with 6-32 C atoms and X represents a, sulfate, sulfonate or salicylate group.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 4, 1993 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.