Dry cleaning carpeting
CA 1103863 A · Owner: Tarkinson, Edward G. · Inventors: Armstrong, John L.; Tarkinson, Edward G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
53,999, "DRY CLEANING CARPETING", ABSTRACT Removal of soil or stains from carpeting by a dry cleaning process, in which a pad including yarn selected in accordance with the carpet material and an intermediate reduced area of metal foil is rotated in contact with a carpet area moistened with a first cleaning solution including volatile hydrocarbons such as lower petroleum fractions detergents, a surfactant, and water, over which a second solution of water and hydrogen peroxide is applied. Pad rotation establishes a controlled electrostatic field and, vapor, liquids, soil particles, etc. are drawn into the pad,
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
- Granted June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.