Hook structure of molded surface fastener
CA 2130700 C · Owner: Yoshida, Hiroshi · Inventors: Tominaga, Yutaka; Yoshida, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a hook structure for a molded surface fastener each, of hooks is composed of a rising portion which has a rear, surface rising obliquely in a smooth curve from the substrate a front surface rising upwardly from the substrate and side, surfaces from at least one of which a reinforcing rib extends and a hook-shape engaging portion extending forwardly from an upper end of the rising portion. The engaging portion has a varying cross-sectional area increasing progressively from its distal end toward the upper end of the rising portion. A straight line between a peak of the rib and a peak of an arcuate lower surface of the engaging portion is substantially parallel to the upper surface of the …
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 August 23, 1994 and granted October 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2016.
- 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.