Low expansion, high porosity, high strength cordierite body and method
CA 2374549 A1 · Owner: Merkel, Gregory A. · Inventors: Malarkey, Christopher J.; Beall, Douglas M.; Merkel, Gregory A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sintered ceramic that exhibits an average linear coefficient of thermal expansion (25-800~C) below about 5.0x10-7~C-1 a total porosity between the , range of 20% to about 30%. Furthermore the sintered ceramic article exhibits a pore size distribution such that at least about 86% of pores are of a pore size of less than about 2µm. Lastly, the ceramic article exhibits an interconnected pore structure with the pores exhibiting a generally elongated shape, i.e. the pores are predominately oriented with their long axis in the plane of the webs. This invention also relates to a method for producing a sintered cordierite ceramic article involving first compounding and plasticizing a …
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 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2022.
- 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.