Non-foaming cleaning compositions and a method for their use
CA 2444441 C · Owner: Tripathi, Uma · Inventors: Tripathi, Uma; Micciche, Robert P.; Ramirez, Benjamin C. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides stable, non-foaming cleaning compositions having a solvent system and a surfactant system. Preferably one composition , also has a propellant system enabling the composition to be delivered as a nonfoaming aerosol spray. The compositions of the present invention may also have one or more enhancing agents.
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 April 16, 2002 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2024.
- 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.