Article for cleaning surfaces
CA 2246231 A1 · Owner: The Procter & Gamble Company · Inventors: Wise, Rodney Mahlon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sheets capable of developing a positive electrostatic charge are used for a variety of surface cleaning opeations. Polyester fabric non-woven and , chemically bonded with an acrylic latex is used to dust surfaces to clean , clothes, furniture and carpets. A light solvent such a isopropanol can be used with the sheets to loosen gummy soils. In one mode the sheets are used in a , hot air clothes dryer to remove soils and detritus from garments. Processes for cleaning a variety of fabric and hard surfaces are conducted using the sheets.
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 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 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.