Compression mould for making a membrane electrode assembly
CA 2473406 A1 · Owner: E.I. Du Pont De Nemours And Company · Inventors: Rule, David P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a mold for use in a compression molding apparatus that has a frame part (41) with a hole through its center; a bottom plunger (42); and a top plunger (43); wherein the plungers are fabricated to fit substantially snugly in the hole in the frame part and wherein at least one , plunger comprises at least one low-thermal conductivity insert (44 44~). The , mold is useful in compression molding processes used in the preparation of unitized membrane electrodes.
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 22, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2025.
- 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.