Vinyl ether compounds having additional functional groups other than vinyl ether groups and the use thereof in the formulation of curable compositions
CA 2132064 C · Owner: Steinmann, Bettina · Inventors: Steinmann, Bettina; Hunziker, Max; Schulthess, Adrian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compounds having at least one vinyl ether group which also, contain in the molecule at least one further functional group selected from acrylate, meth-acrylate, epoxy, alkenyl cycloalkenyl and vinylaryl groups, to compositions, especially, for stereolithography comprising those vinyl ether compounds and to a method , of, producing three-dimensional objects using those compositions.
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 September 14, 1994 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2016.
- 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.