Photo-curable composition
CA 2037077 A1 · Owner: Nagase, Rihei · Inventors: Yamazaki, Mari; Nagase, Rihei; Kawano, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A photo-curable composition is disclosed which includes a 5-60 % by weight of a polymerizable prepolymer 5-70, % by weight of a product obtained by reaction of a 1 mole portion of (meth)acrylic acid with a more than 1 mole portion of a diglycidyl ether of a bisphenol, 10-90 % by weight of a reactive diluent, and 0.2-20 % by weight of a polymerization initiator, the amounts being based on the total amount of the prepolymer, product and diluent.
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 February 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2013.
- 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.