An insulating board
CA 2276593 A1 · Owner: Rochefort, Malcolm · Inventors: Rochefort, Malcolm; Mccabe, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire retardant insulating board 1 comprises a foam core 2 having facings 3 4 on, both faces thereof The foam core is reinforced by a glass fiber scrim 5 having a, weight of from 8 to 24, preferably 10 to 20 and ideally approximately 13.6 g/m2 of, board. To produce the board 1 in a continuous manufacturing process the facings, 3, 4 with the scum 5 and foam reactants are passed under a nip bar 30 to thoroughly wet out the scrim 5 before allowing the foam to expand.
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 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2021.
- 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.