Photocurable compositions
CA 2007295 C · Owner: Klingert, Bernd · Inventors: Schulthess, Adrian; Schmidt, Kris Alan; Hofmann, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a liquid resin composition which can be polymerized by radiation and which contains (i) a difunctional monomeric or polymeric acrylate or methacrylate (ii) a tri- or polyfunctional acrylate or methacrylate (iii) at least one unsaturated monofunctional monomeric compound of the formula VI, wherein R5 denotes hydrogen or methyl and R6 is a group of the formula VII, R7 being tetrahydrofurfuryl cyclohexyl, 2-phenoxyethyl, benzyl, isobornyl glycidyl, dicyclopentenyl, morpholinoethyl dimethylaminoethyl, diethylaminoethyl or a C1-C20 linear or branched aliphatic residue, or - if R5 is hydrogen R6 denotes additionally pyrrolidinon-2-yl, imidazonyl, carbazolyl anthracenyl, …
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 January 8, 1990 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2012.
- 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.