Last month, as available via: Grumman Aerospace Recycles CO2 | Research & Development | News; we made report of "US Patent 4,282,187 - Hydrocarbons from Air, Water and Low Cost Electrical Power", which was awarded and assigned to Grumman all the way back in 1981.
The disclosed technology is one which enables us, as Grumman puts it, to manufacture "synthetic hydrocarbons such as gasoline and/or kerosene from the synthesis of carbon dioxide and hydrogen".