Expired Canadian patentCanada
Two-component pulp reinforcement
CA 2426677 C · Owner: E.I. Du Pont De Nemours And Company · Inventors: Truby, Michael R.; Prior, David W.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a high modulus elastomer composition reinforced by pulp having a high surface area and composed of a combination of at least two organic polymeric materials.
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 27, 2001 and granted June 14, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2023.
- 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 27, 2001
GrantedJune 14, 2011
Term endedNovember 27, 2021
Patent numberCA 2426677 C
Classification (IPC)D21H13/26 +2 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.