Expired Canadian patentCanada
Flowable powder carpet cleaning formulations
CA 2114742 C · Owner: Reckitt Benckiser Inc. · Inventors: Paszek, Leon E.; Weller, Jeanne 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
A flowable powder fabric dry cleaning, formulation is disclosed. The formulations contains powdered cellulose, borax hydrated amorphous silica anionic surfactants, an organic solvent water; and a, zeolite.
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 February 2, 1994 and granted March 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 2, 1994
GrantedMarch 18, 1997
Term endedFebruary 2, 2014
Patent numberCA 2114742 C
Classification (IPC)C11D17/06 +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.