Multi-layered article
CA 2266306 C · Owner: Terada, Yoshihiro · Inventors: Terada, Yoshihiro; Maruyama, Katsuya; Ota, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-layered article having a first portion constituted of laminated three resin layers and a second portion extending from the first portion the first portion being constituted mainly of consecutively laminated resin layers composed of a first resin layer formed of a first resin a second resin layer formed mainly of a second resin and a third resin layer formed of the first resin the second portion being constituted of resin layers extending from the first resin layer and the third resin layer which constitute the first portion the first resin layer constituting the outer surface layer of the multi-layered article the third resin layer constituting the inner surface layer of the …
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 March 23, 1999 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2021.
- 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.