Expired Canadian patentCanada
Improved comfort melamine fabrics and process for making them
CA 2230252 C · Owner: Johnson, Karen L. . · Inventors: Kent, George M.; Burlone, Dominick A.; Gadoury, Dean R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fabrics made of melamine fibers are made more comfortable by submerging them for at least 20 minutes in a dyebath or mock dyebath that is at least 70°C.
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 March 30, 1998 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1998
GrantedMay 14, 2002
Term endedMarch 30, 2018
Patent numberCA 2230252 C
Classification (IPC)D06P3/02 +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.