Phosphorus containing resin
CA 2124465 A1 · Owner: Buser, Antonius J. W. · Inventors: Steenbergen, Andre; Schutyser, Jan A. J.; Buser, Antonius J. W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Resin composed of an interpenetrating network (IPN) into which an organic phosphorous compound is incorporated. The IPN is composed of an allyl polymer network and an epoxy resin network. More particularly, a chemically incorporated phosphorus compound is present in at least one of the networks. Such an IPN can be produced by replacing at least one of the ingredients of an IPN-forming reaction mixture known in itself wholly or in part with an organic phosphorus compound which has at least one functional group reactive towards at least one of the other ingredients.
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 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2014.
- 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.