Stabilisation of k1k2p pro
CA 2046930 C · Owner: Kohnert, Ulrich · Inventors: Kohnert, Ulrich; Rudolph, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical preparation of a non-glycosylated t-PA derivative K1K2P pro with an enzymatic activity of at least 0.4 MU/ml. and a pH value of 4.5 to 6 which contains citrate and at least one compound from the group consisting of, a) ascorbic acid b) EDTA, c) amino compounds of the formula R1RN - R - X, whereby X = SO3H, CH(NH2)-CO2H CO2H, H, NH2 or OH, R = C1-C9-alkylene C3-C6-cycloalkylene or, benzylidene and R1 and R independently of one, another, are H or C1-C3-alkyl d) guanidinobutyric acid, e) dimethylbiguanide f) arginine, g) glucosamine, fructose, h) pyrimidine nucleosides and pyrimidine nucleotides i) carboxylic acids substituted with one or more hydroxyl, keto and/or further …
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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 December 19, 1990 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 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.