The link will lead you to a full disclosure of this United States patent, issued just a few years ago to researchers from Korea.
In sum, to repeat the link headline, it is:
US Patent 6248795 - Process of preparing a mixture of dimethyl ether and methanol from carbon dioxide.
The inventors are Ki Won Jun and Kyu Wan Lee, who have assigned the patent to The Korea Research Institute of Chemical Technology.
An excerpt:
"This invention relates to the process of preparing from carbon dioxide a mixture of dimethyl ether and methanol which are useful as clean purifying fuel or raw materials in the chemical industry."
If you will recall, there are a number of US Patents in this arena, including one awarded, many decades ago, to one Lewis Karrick, for the manufacture of liquid petroleum --- from coal.
And, it might be gratuitous to add that Exxon-Mobil have a patented, trademarked process, "MTG", as we've documented, for converting methanol into gasoline.