Synthetic diamond-containing material and method of obtaining it
CA 2104867 C · Owner: Petrov, Evgeny A. · Inventors: Vereschagin, Alexandr L.; Komarov, Vitaly F.; Sakovich, Gennady V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diamond-containing material having the following element content ratio in percent by weight: carbon 75-90 hydrogen 0.6-1.5, nitrogen 1.0-4.5, oxygen the balance the, following phase content ratio in percent by weight: roentgen amorphous diamond-like phase 10-30, diamond of cubic modification the balance, and having a porous structure. 10-20% of the surface of the material consists of methyl nitryl and hydroxy groups of two types as well as, functional oxycarboxy groups of the general formula O=R where R represents =COH, =COOH, =CO, =C6H4O or any of their combinations, and 1-2% of the surface consists of carbon atoms with non-compensated links. A method for obtaining said material consists …
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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 3, 1992 and granted November 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2014.
- 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.