Extrusion die and an extrusion method using same
CA 2093460 C · Owner: Yugen Kaisha Yano Engineering · Inventors: Yano, Sadahide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A female die 3 is composed of a plate-shaped bearing tip 31, a backup block 32 and a cylindrical holder 33 for receiving and setting in place the tip together with the block, in which the bearing tip 31 made of a hard metal and the backup block 32 also made of the hard metal are such that they can be manufactured simply and easily and, in which only the bearing tip 31 need be replaced with a new one if and when the bearing portion of the die has been abraded.
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 April 6, 1993 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2015.
- 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.