Process and apparatus for forming selvage of separable fastener
CA 2087990 A1 · Owner: Miyamoto, Tomio · Inventors: Kotoji, Takashi; Miyamoto, Tomio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for forming selvages on the surface of a separable fastener comprising a substrate comprising a thermoplastic resin and, provided vertically on the surface thereof, a multiplicity of fastening elements comprising a thermoplastic resin, which comprises, while conveying said separable fastener in the longitudinal direction internally, heating said separable fastener along the conveying path and, at the same time, pressing said fastening elements onto said substrate to form flat parts that will constitute selvages, with a plurality of press rolls provided in a spaced relationship with each other in the widthwise direction of said separable fastener; and an apparatus therefor. This …
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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 January 25, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2015.
- 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.