Cleaning formulation for fabricated yarn products
CA 2263915 A1 · Owner: Del Pesco, Thomas Wayne · Inventors: Del Pesco, Thomas Wayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning formulation for a fabricated yarn product such as a carpet comprises: a styrene maleic anhydride polymer stain resist agent; an anionic surfactant; a mixed alkyl ethoxylated (C10-C16) nonionic surfactant having a hydrophile lipophile balance in the range of about 10.5 to about fifteen; and a fluorosurfactant. A fluorochemical soil resist agent may be optionally included. The cleaning formulation may be made in dilute or concentrate form.
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 September 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 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.