Hydrogen-natural gas motor fuel
CA 2189444 C · Owner: Hahn, Douglas Edward · Inventors: Mulligan, David Neal; Hahn, Douglas Edward; Collier, Robert Kirk, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydrogen and natural gas fuel mixture (16) for internal combustion engines is provided for vehicle engines such as those used in standard production engines (10) for automobiles trains, and lawn mowers. , The gaseous fuel (16) for operating vehicle combustion engines (10) includes approximately 21 to 50 % Hydrogen and the rest natural gas constituents such as combinations of Methane Carbon, Dioxide, Nitrogen, Ethane, Propane Iso-Butane, N-Butane, Ipso-Pentane, N- Pentane and Hexans Plus. A fuel mixture of approximately 28 to 36 percent Hydrogen and an air fuel equivalence ratio of approximately 0.625 is an extreme lean burn condition that yields hydrocarbon emission levels of less than …
Read the whole patent
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 May 3, 1995 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 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.