Medicaments containing as active substance sulphur-containing carboxylic acids and their use in combating retroviruses
CA 2029599 C · Owner: Baur, Andreas · Inventors: Harrer, Thomas; Kalden, Joachim; Baur, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Medicaments are disclsoed that contain at least one compound of formula I, (see fig.I), where X is a hydrogen atom or both X represent a simple bond between the two sulphur atoms; Y is hydrogen or C1-C6-alkyl and n represents a number from 1 to 10 or their therapeutically acceptable salts with the exception of .alpha.-lipoic acid and dihydrolipoic acid wherein the dosage unit, for solid or semi-solid formulations contains 20 mg to 6 g of the total amount of active substance I or solutions, suspensions or emulsions which contain 0.2 mg to 800 mg per ml per ml of the total amount of active substance I or a pharmaceutically acceptable salt thereof. These medicaments are for example suitable …
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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 November 8, 1990 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2012.
- 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.