Expired Canadian patentCanada
Belt conveyors, especially for food products
CA 2135573 C · Owner: Elf Atochem S.A. · Inventors: Alex, Patrick
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
his invention relates to a conveyor belt comprising an outer layer of polyamide and an inner layer of a thermoplastic block polymer intended for use, in particular, in the food and agri-food industries.
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 November 10, 1994 and granted August 19, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 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.
FiledNovember 10, 1994
GrantedAugust 19, 1997
Term endedNovember 10, 2014
Patent numberCA 2135573 C
Classification (IPC)B65G15/32 +1 more
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.