Method of manufacturing slide fastener
CA 2194472 C · Owner: Hirasawa, Masanori · Inventors: Kuse, Kazuki; Morita, Toyoo; Hirasawa, Masanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing a slide fastener which can efficiently accomodate , various demands for slide fasteners reduces an amount of scrapped fastener chain required for slide fasteners of the same kind as much as possible and , facilitates production control. The method comprises feeding a lengthy continuous fastener chain (Ch) from a supply section (10) irrespective of the number of slide fasteners which are planned to be manufactured measuring the , fastener chain (Ch) for each length of individual slide fasteners (SF) being manufactured by means of a measuring roll (31) to form space portions (SP) and after formation of as many space portions (SP) as the number of slide …
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 May 9, 1996 and granted August 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2018.
- 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.