Photocurable film adhesives
CA 2068835 A1 · Owner: Haddon, Margaret Ruth · Inventors: Smith, Terence James; Haddon, Margaret Ruth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Case K-18655/A/MA 2029, ABSTRACT OF THE DISCLOSURE Photocurable Film Adhesives, A solid photocurable film adhesive comprising (I) a photocurable material having on, average, more than one acrylic group per molecule at least 20% by weight of said, material being a urethane acrylate a polyester acrylate or a mixture of a urethane acrylate and a polyester acrylate, (II) as sole or major solid film-forming component a solid polyvinylacetal and (m) a photoinitiator for photopolymerisation of acrylic compounds. The film adhesive is useful in the production of data-carrying laminates such asidentity cards.
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 May 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 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.