Arrangement for coupling films to leader
CA 2120474 C · Owner: Yamaguchi, Takuji · Inventors: Kinoshita, Tohgo; Fukushima, Shinji; Kojima, Masayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Various arrangements are proposed for coupling films to a leader. A hole is formed in one of the films and the leader to receive a tab which is formed on the other. These arrangements allow stable coupling of the films to the leader and easy uncoupling. They eliminate the use of splice tape.
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 29, 1994 and granted May 25, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 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.