Thermal management of vehicle exhaust systems
CA 2182016 C · Owner: Potter, Thomas F. · Inventors: Benson, David K.; Potter, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalytic converter (10, 140) is surrounded by variable conductance insulation (30 164) for maintaining the operating temperature of the catalytic converter (10, 140) at an optimum level for inhibiting heat loss when raising catalytic converter temperature to light-off temperature, for storing excess heat to maintain or accelerate leaching light-off temperature and for conducting excess heat away from the catalytic converter (10, 140) after reaching light-off temperature. The variable conducting excess heat away from the catalytic converter (10, 140) after reaching light-off temperature. The variable conductance insulation (30) includes vacuum gas control and metal-to-metal thermal shunt …
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 January 27, 1995 and granted August 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 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.