Reinforcing tapes for slide fastener
CA 2173783 C · Owner: Fujii, Osamu · Inventors: Hirasawa, Masanori; Kuse, Kazuki; Morita, Toyoo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener (1) comprises a pair of dyed fastener tapes (2a, 2b) each having a row of coupling elements (4a 4b) attached to the fastener tape along a longitudinal edge thereof and at least a pair of reinforcing tapes (3a 3b), attached to a terminal part of each of the fastener tapes (2a, 2b). The reinforcing tape (3a, 3b) comprising a transparent elastomer film (9) and an adhesive layer (10) superposed on the reverse side of the elastomer film (9) is attached by welding or fusion bonding to the terminal part of the dyed fastener tape (2a, 2b) through the medium of the adhesive layer (10) and has a knurled surface (11) at the welded part.
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 10, 1996 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 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.