Moisture control sock
CA 2058313 C · Owner: Wigwam Mills, Inc. · Inventors: Chesebro, Robert E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Moisture control characteristics are imparted to the sock of the present invention by body yarn (B) knit in successive courses throughout the leg (10) and foot (12). A hydrophobic yarn (Y-1) is knit in plated relationship with the body yarn (B) in partial courses extending throughout the sole (15), and hydrophilic yarn (Y-2) is knit in plated relationship with the body yarn (B) in partial courses extending throughout the instep (16) whereby moisture generated by the foot of the wearer is wicked and transported from the sole (15) and into the instep (16) to be evaporated therefrom. Cut free ends of the hydrophobic yarn (Y-1) extend from the endmost stitch loops in wales along the juncture of …
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 December 23, 1991 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2013.
- 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.