Syntactic foams with improved water resistance, long pot life and short demolding times
CA 2431668 C · Owner: Guether, Ralf · Inventors: Sekelik, Thomas L.; Guether, Ralf; Markusch, Peter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to syntactic foams comprising the reaction product of a liquid diphenylmethane diisocyanate component with an isocyanate-reactive component, a filler having a density of less than 1 g/cm 3 and at least one organo-metallic catalyst. This invention also relates to the use of these syntactic foams for insulating pipes.
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 10, 2003 and granted February 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 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.