Expired Canadian patentCanada
Perfume additives for fabric-softening compositions
CA 2113613 C · Owner: Demeyere, Hugo J.M. · Inventors: Appeltants, Ann; Demeyere, Hugo J.M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Granular perfume additives for rinse-added fabric softening compositions are disclosed said additives containing a, mixture of perfume and softening active in specified ratios adsorbed onto particles of porous silica.
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 10, 1992 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 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.
FiledJuly 10, 1992
GrantedMay 5, 1998
Term endedJuly 10, 2012
Patent numberCA 2113613 C
Classification (IPC)D06M13/46 +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.