Monofilament yarn and process for producing the same
CA 2404345 A1 · Owner: Koyanagi, Tadashi · Inventors: Yuuki, Yasunori; Koyanagi, Tadashi; Matsuo, Teruhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polytrimethylene terephthalate monofilament yarn which is excellent in flexibility, flex recovery, and durability in long-term use. It is characterized by being made of a polytrimethylene terephthalate comprising 90 mol% or more trimethylene terephthalate repeating units and 10 mol% or less repeating units of another ester and by having a single yarn fineness of 50 dtex or higher, an intrinsic viscosity of 0.8 to 1.3 dl/g and a shrinkage in , boiling water of 2% or lower.
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 March 28, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 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.