Toilet bowl cleaners containing iodophors
CA 2001186 C · Owner: Kiwi Brands, Inc. · Inventors: Burke, Peter A.; Bunczk, Charles J.; Camp, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Solid cake lavoratory cleansing block composition comprising an iodophor, polyethylene oxide polymer having a molecular weight between about 1 to 6 million a dye, calcium sulfate and optional ingredients which include fragrances, binders, filler material and mixtures thereof.
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 23, 1989 and granted October 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.