Canadian application, no grantCanada
Flexible polyurethane foam and method for its production
CA 2412411 A1 · Owner: Kimura, Yuuji · Inventors: Akagi, Etsuko; Kimura, Yuuji; Sasaki, Takayuki
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible polyurethane foam having a core impact resilience of at most 40%, of which the half-width of the resonance transmission peak in the resonance curve is at most 1 Hz.
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 November 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.
FiledNovember 25, 2002
GrantedNo grant recorded
Term endedNovember 25, 2022
Patent numberCA 2412411 A1
Classification (IPC)C08G18/72 +2 more
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.