Substantially dry cleaning wipe
CA 2002952 A1 · Owner: Sheridan, Christopher H. · Inventors: Sheridan, Christopher H.; Amann, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A substantially flexible dry wipe capable of cleaning a surface by removing dust and/or organic film and rendering the surface substantially static-free comprising a matrix comprising natural or synthetic, woven non-woven or knitted, fibers, or a flexible foam material said matrix having been, uniformly coated with an amount of treatment solution sufficient to allow said matrix to retain its substantially dry characteristics, said solution comprising between about 25% and 75% of at least one glycol compound between about, 0.2% and 60% of a cationic surfactant and optionally up to, about 45% of a nonionic surfactant may be added to the treatment solution. When removing organic film the, wipe …
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 November 14, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2011.
- 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.