New synthetic catechol derivatives, method for production and use thereof
CA 2252809 A1 · Owner: Mollmann, Ute · Inventors: Schnabelrauch, Matthias; Heinisch, Lothar; Mollmann, Ute
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns new catechol derivatives of the general formula (I) in , which azomethine-carboxylic acid rests azobenzene-carboxylic acid rests, benzhydrazon rests aminobenzoic acid rests and amino acid rests or dipeptides, pyrrolidine and/or oxazolidine carboxylic acid rests and formylcarboxymethyloxime rests act as structural elements and the conjugates , thereof with active ingredients such as antibiotics. The compounds according to the invention act as siderophors in gram-negative bacterial strains in , particular in pseudomonas and strains of E. coli salmonella, klebsiella and , proteus, and can in the form of their conjugates with active ingredients e.g. , antibiotics (as …
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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 May 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2019.
- 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.