Reinforcing device for bushing used to produce filaments, such as glass-based filaments
CA 2515671 C · Owner: Thiriet, Jean-Louis · Inventors: Thiriet, Jean-Louis; Renaudin, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a reinforcing device (1) which is intended for example, for a bushing base comprising numerous holes through which filaments such as glass filaments, are drawn. The inventive device consists of a reinforcing part (10) comprising a first hollow part (12) which defines at least one housing and a second part (13) which extends at least partially along the length of the hollow part (12) as well as at least one stiffener element (40) which is inserted into the housing of said hollow part. The invention is characterised in that the section of the stiffener element (40) is essentially identical to the inner section of the hollow part (12).
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 4, 2004 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2026.
- 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.