Silylated polyurethanes for adhesives and sealants with improved mechanical properties
CA 2414411 C · Owner: Adco Products, Inc. · Inventors: Wang, Xiaobin; Kubish, Scott D.; Briddell, Brian J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The silylated polyurethane polymer includes a polyurethane prepolymer having between greater than about 50 to about 95 % of NCO groups terminated with silane capping agents. The polymer has an improved mechanical properties. The polymer can also have between about 5 % to less than about 50 % of the NCO groups terminated with low molecular weight terminators.
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 7, 2001 and granted March 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2023.
- 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.