Releasant for aqueous polymer-type floor polish
CA 2247107 C · Owner: Johnson Co. Ltd. · Inventors: Sado, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A releasing agent for removing a wasted film of an aqueous polymer-type floor polish is comprised of (A) a specified amount of a water-soluble organic solvent represented by the formula: C4H9-O-(CH2CH2O)n H where n is an integer of 2 or 3, (B) a specified amount of benzyl alcohol and (C) a specified amount of an amine compound of a selected class. That releasant leads to (1) easy removal of an aqueous polymer-type floor polish film (2) simple rinse with water, and (3) , least use of a volatile organic compound immunity from, offensive smell and safety.
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 26, 1997 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2019.
- 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.