Continuous carpet dyeing process
CA 1097460 A · Owner: Henderson, James M. · Inventors: Henderson, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous dyeing process for use in dyeing material such as carpet, a selected one of a number of colors. The process is performed by providing at least two dye applicator means, advancing a length of material to be dyed along a predetermined path adjacent the applicator means operating one, of the applicator means a predetermined period of time to apply one color dye to the length of material moving along the predetermined path, fixing the first color dye to the length of material. operating the other one of the dye applicator means for a predetermined period of time to apply a second color dye to a length of material moving along the predetermined path, and fixing the second color dye …
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
- Granted March 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
- 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.