A crystalline modification of 2,4-dioxo-6-methyl-1, 2,3,4-tetrahydropyrimidine, a method for the preparation thereof and a medical preparation based on it
CA 2132417 C · Owner: Leonidov, Nikolai Borisovich · Inventors: Leonidov, Nikolai Borisovich; Selezenev, Nikolai Georgevich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new crystalline modification of 2,4-dioxo-6-methyl-1,2,3,4-tetrahydropyrimidine is disclosed characterized by the, interplanar distances (d) and relative reflex intensity (I). The process for obtaining the said substance involves using a cooling agent to cool a solution of 2,4-dioxo-6-methyl-1,2,3,4-tetrahydropyrimidine in water an organic solvent or a mixture of both at, a rate of at least 6 °C per minute until the solution has completely crystallized. The crystals obtained are then removed and dried. The substance claimed has anti-inflammatory properties and promotes the healing of wounds and is the active substance in a preparation used in treating burns and wounds of various types.
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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 January 20, 1993 and granted August 5, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.