Institutional towel
CA 2352709 C · Owner: Hamby, David Eugene · Inventors: Rice, Wilbur Mattison; Hamby, David Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coloured institutional towel comprising ground warp fill, and pile warped yarns, all of said yarns being coloured by intimately draw blending a predetermined amount of pre-dyed polyester fibre with cotton fibre when the yarn is spun and twisted to thereby form a predetermined colour for the institutional towel.
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 July 24, 2001 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2023.
- 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.