Cleaning compositions
CA 2191135 C · Owner: The Procter & Gamble Company · Inventors: Gordon, Neil James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The compositions described herein are hard surface cleaning compositions which are viscous but at the same time easy to rinse. Such compositions are formulated by using an amine oxide or amine, or mixtures thereof, in combination with a secondary or primary, monobranched alxyl sulfate or sulfonate in a mildly acidic system further comprising a hydrotrope and an organic acid.
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 May 10, 1995 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2017.
- 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.