Insulated heat shield
CA 2390467 C · Owner: Popielas, Frank Walter · Inventors: Chapman, Matthew B.; Breen, Bryan S.; Chen, Colin Ching-Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat shield provides thermal insulation and reduced noise transmission for under-the-hood vehicular engine components such as exhaust manifolds. The structure is formed in three layers: an outer metal layer to provide structural integrity a center insulation layer to isolate heat and dampen noise and an inner metal layer directly adjacent the shielded component for reflecting heat back to the shielded component. As disclosed the insulation layer is sandwiched between the two metal layers. The heat shield is formed in two integral mating halves to define a unitary structure containing grommets. The grommets incorporate capscrews rotatably secured in respective halves of the structure for …
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 June 11, 2002 and granted October 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2024.
- 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.