Expired Canadian patentCanada
Methods of treating and cleaning fibers, carpet yarns and carpets
CA 2475641 C · Owner: Shaw Industries Group, Inc. · Inventors: Jones, Dennis J. Jr.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods of enhancing stain resistance of fibers carpet yarns and carpets are disclosed. Treating compositions used to enhance the stain resistance of fibers carpet yarns and carpets are also disclosed.
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 July 23, 2004 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 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.
FiledJuly 23, 2004
GrantedJune 19, 2012
Term endedJuly 23, 2024
Patent numberCA 2475641 C
Classification (IPC)D06M11/00 +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.