Diglycidyl ether
CA 2253432 C · Owner: Muto, Kenji · Inventors: Murayama, Toshikazu; Muto, Kenji; Tsuzaki, Nobuko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a diglycidyl ether represented by the following general formula (I): (wherein, R1 and R2 are the same or different and represent lower, alkyl having 1-6 carbon atoms) a composition including the, glycidyl ether and epoxy resin and epoxy resin cured product, obtained by the composition. The glycidyl ether can be used as a reactive diluent for epoxy resins.
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 March 3, 1998 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2020.
- 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.