Coupling element row for slide fastener and surface treating method for the same
CA 2014032 C · Owner: Yamagata, Hiroshi · Inventors: Yamagata, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coupling element row for a slide fastener comprising fine, metal particles individually deposited on the etched surface of a continuous coupling element row made of a synthetic resin and a surface treating, method for preparing the coupling element row for a slide fastener comprising the steps of etching the surface of a continuous coupling element row made of a synthetic resin, and depositing fine metal particles individually on the etched surface of the continuous coupling element row by sputtering while feeding the coupling element row so as not to distort the pitch thereof.
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 April 6, 1990 and granted November 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2012.
- 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.