Substituted pyrrole compounds and their applications in pharmacy
CA 2016501 C · Owner: Dannhardt, Gerd · Inventors: Steindl, Ludwig; Lehr, Matthias; Dannhardt, Gerd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns substituted pyrrole compounds and their applications in pharmacy. The compounds of the invention are potent inhibitors of lipoxygenase and cyclooxygenase and therefore are suitable to treat the set of rheumatic illnesses and to prevent allergically induced ailments. The compounds have the general formula: where R1 denotes a C1-C12 alkyl group, R2 denotes a hydrogen atom or a C1-C12 alkyl group, or R1 and R2 together with the carbon atom and the nitrogen atom to which they are bound form a ring of 5 to 8 links which may contain a sulfur heteroatom or a carbonyl group and may be substituted with one or two C1-C4 alkyl groups, each time two of the residues R3 R4 and R5, …
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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 10, 1990 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 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.