Amorphous microporous oxidic solids, process for producing them and their use
CA 2194058 C · Owner: Hoffmeister, Michael · Inventors: Hoffmeister, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to microporous oxidic solids based on organofunctional compounds of metals, transition metals and semiconductor elements preferably , elements in the third and fourth main group and/or the fourth sub-group of the periodic table of the elements, which are produced by the tempering and calcining of said compounds in an oxygen or ozone-containing atmosphere and their use as adsorption agents, for substance separation as catalysts or , catalyst substrates.
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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 June 28, 1995 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2017.
- 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.