Expired Canadian patentCanada
Composition and process for the preparation of articles having moulding stability
CA 2081812 C · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Rembold, Manfred; Nesvadba, Peter; Eckhardt, Claude
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition and a process for the preparation of polyamide fibre containing articles, having enhanced moulding stability comprising the use of benzofuran-2-ones as claimed, in claim 1.
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 October 30, 1992 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 30, 1992
GrantedJuly 2, 2002
Term endedOctober 30, 2012
Patent numberCA 2081812 C
Classification (IPC)D06M13/22 +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.