Method of and apparatus for dyeing or otherwise treating an elongate fabric material
CA 2004832 C · Owner: Umino, Mitsugu · Inventors: Umino, Mitsugu; Nakayama, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of dyeing or otherwise treating an elongate fabric material including slide fastener stringers comprises winding said fabric material on a rotatable frame means disposed in a dye chamber and reducing the diameter of said frame means to an extent necessary to compensate for the amount of shrinkage developed in said fabric material during the dyeing operation. A dyeing apparatus for dyeing or otherwise treating an elongate fabric material comprises a cylindrical vessel and a beam mounted concentrically therein and removable therefrom, the beam having a plurality of chambers isolated one from another and a dye frame unit rotatably mounted on a driven shaft extending axially through …
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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 7, 1989 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 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.